Search a number
-
+
1442001223 = 13157970249
BaseRepresentation
bin101010111110011…
…0011000101000111
310201111101020210201
41111330303011013
510423123014343
6355031031331
750506544125
oct12574630507
93644336721
101442001223
1167aa76953
12342b0b547
1319c996180
14d9726915
15868de94d
hex55f33147

1442001223 has 8 divisors (see below), whose sum is σ = 1553930000. Its totient is φ = 1330216128.

The previous prime is 1442001167. The next prime is 1442001277. The reversal of 1442001223 is 3221002441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1442001223 - 29 = 1442000711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442001223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442001293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14598 + ... + 55651.

It is an arithmetic number, because the mean of its divisors is an integer number (194241250).

Almost surely, 21442001223 is an apocalyptic number.

1442001223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1442001223 is a deficient number, since it is larger than the sum of its proper divisors (111928777).

1442001223 is a wasteful number, since it uses less digits than its factorization.

1442001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71841.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1442001223 is about 37973.6911953526. The cubic root of 1442001223 is about 1129.7661099967.

Adding to 1442001223 its reverse (3221002441), we get a palindrome (4663003664).

The spelling of 1442001223 in words is "one billion, four hundred forty-two million, one thousand, two hundred twenty-three".

Divisors: 1 13 1579 20527 70249 913237 110923171 1442001223