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1442130311 = 6721524333
BaseRepresentation
bin101010111110101…
…0010100110000111
310201111121210212202
41111331102212013
510423141132221
6355033505115
750510622356
oct12575224607
93644553782
101442130311
11680054936
12342b7219b
1319ca0cb5b
14d975b99d
1586917d0b
hex55f52987

1442130311 has 4 divisors (see below), whose sum is σ = 1463654712. Its totient is φ = 1420605912.

The previous prime is 1442130301. The next prime is 1442130329. The reversal of 1442130311 is 1130312441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1442130311 - 210 = 1442129287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442130301) 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 3 ways as a sum of consecutive naturals, for example, 10762100 + ... + 10762233.

It is an arithmetic number, because the mean of its divisors is an integer number (365913678).

Almost surely, 21442130311 is an apocalyptic number.

1442130311 is a deficient number, since it is larger than the sum of its proper divisors (21524401).

1442130311 is an equidigital number, since it uses as much as digits as its factorization.

1442130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21524400.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1442130311 is about 37975.3908603980. The cubic root of 1442130311 is about 1129.7998212247.

Adding to 1442130311 its reverse (1130312441), we get a palindrome (2572442752).

It can be divided in two parts, 1442130 and 311, that added together give a palindrome (1442441).

The spelling of 1442130311 in words is "one billion, four hundred forty-two million, one hundred thirty thousand, three hundred eleven".

Divisors: 1 67 21524333 1442130311