102042440312 has 16 divisors (see below), whose sum is σ = 193187145840. Its totient is φ = 50525868096.

The previous prime is 102042440303. The next prime is 102042440323. The reversal of 102042440312 is 213044240201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61918133 + ... + 61919780.

It is an arithmetic number, because the mean of its divisors is an integer number (12074196615).

Almost surely, 2^102042440312 is an apocalyptic number.

It is an amenable number.

102042440312 is a deficient number, since it is larger than the sum of its proper divisors (91144705528).

102042440312 is a wasteful number, since it uses less digits than its factorization.

102042440312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123838022 (or 123838018 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 102042440312 its reverse (213044240201), we get a palindrome (315086680513).

The spelling of 102042440312 in words is "one hundred two billion, forty-two million, four hundred forty thousand, three hundred twelve".