102320432442 has 64 divisors (see below), whose sum is σ = 249752448000. Its totient is φ = 30906851184.

The previous prime is 102320432399. The next prime is 102320432447. The reversal of 102320432442 is 244234023201.

102320432442 is a `hidden beast` number, since 10 + 2 + 3 + 204 + 3 + 2 + 442 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102320432447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2144392 + ... + 2191587.

It is an arithmetic number, because the mean of its divisors is an integer number (3902382000).

Almost surely, 2^102320432442 is an apocalyptic number.

102320432442 is an abundant number, since it is smaller than the sum of its proper divisors (147432015558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102320432442 is a wasteful number, since it uses less digits than its factorization.

102320432442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336032 (or 4336026 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 102320432442 its reverse (244234023201), we get a palindrome (346554455643).

The spelling of 102320432442 in words is "one hundred two billion, three hundred twenty million, four hundred thirty-two thousand, four hundred forty-two".