1232342656 has 16 divisors (see below), whose sum is σ = 2455057890. Its totient is φ = 616171264.

The previous prime is 1232342651. The next prime is 1232342677. The reversal of 1232342656 is 6562432321.

It can be written as a sum of positive squares in only one way, i.e., 1052353600 + 179989056 = 32440^2 + 13416^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (1232342651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4813711 + ... + 4813966.

Almost surely, 2^1232342656 is an apocalyptic number.

1232342656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1232342656 is a deficient number, since it is larger than the sum of its proper divisors (1222715234).

1232342656 is an frugal number, since it uses more digits than its factorization.

1232342656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9627691 (or 9627679 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 1232342656 is about 35104.7383696275. The cubic root of 1232342656 is about 1072.1210600641.

Subtracting from 1232342656 its product of digits (51840), we obtain a square (1232290816 = 35104²).

Adding to 1232342656 its reverse (6562432321), we get a palindrome (7794774977).

The spelling of 1232342656 in words is "one billion, two hundred thirty-two million, three hundred forty-two thousand, six hundred fifty-six".