Search a number
-
+
1223142230 = 25401305023
BaseRepresentation
bin100100011100111…
…1010101101010110
310011020120001201002
41020321322231112
510001111022410
6321212103302
742211352222
oct11071725526
93136501632
101223142230
11578482952
122a1764b32
13166537bcb
14b8635782
15725ac7a5
hex48e7ab56

1223142230 has 16 divisors (see below), whose sum is σ = 2207153664. Its totient is φ = 488035200.

The previous prime is 1223142187. The next prime is 1223142269. The reversal of 1223142230 is 322413221.

It is a congruent number.

It is an unprimeable number.

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, 148502 + ... + 156521.

It is an arithmetic number, because the mean of its divisors is an integer number (137947104).

Almost surely, 21223142230 is an apocalyptic number.

1223142230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223142230 is a deficient number, since it is larger than the sum of its proper divisors (984011434).

1223142230 is a wasteful number, since it uses less digits than its factorization.

1223142230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305431.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1223142230 is about 34973.4503588079. The cubic root of 1223142230 is about 1069.4463114907.

Adding to 1223142230 its reverse (322413221), we get a palindrome (1545555451).

The spelling of 1223142230 in words is "one billion, two hundred twenty-three million, one hundred forty-two thousand, two hundred thirty".

Divisors: 1 2 5 10 401 802 2005 4010 305023 610046 1525115 3050230 122314223 244628446 611571115 1223142230