102440012 has 6 divisors (see below), whose sum is σ = 179270028. Its totient is φ = 51220004.

The previous prime is 102439991. The next prime is 102440021. The reversal of 102440012 is 210044201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12804998 + ... + 12805005.

It is an arithmetic number, because the mean of its divisors is an integer number (29878338).

Almost surely, 2^102440012 is an apocalyptic number.

It is an amenable number.

102440012 is a deficient number, since it is larger than the sum of its proper divisors (76830016).

102440012 is a wasteful number, since it uses less digits than its factorization.

102440012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25610007 (or 25610005 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 102440012 is about 10121.2653359153. The cubic root of 102440012 is about 467.9037654904.

Adding to 102440012 its reverse (210044201), we get a palindrome (312484213).

The spelling of 102440012 in words is "one hundred two million, four hundred forty thousand, twelve".