101902400042 has 16 divisors (see below), whose sum is σ = 163893663360. Its totient is φ = 47347055808.

The previous prime is 101902400021. The next prime is 101902400099. The reversal of 101902400042 is 240004209101.

It is a junction number, because it is equal to n+sod(n) for n = 101902399990 and 101902400017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18966488 + ... + 18971859.

It is an arithmetic number, because the mean of its divisors is an integer number (10243353960).

Almost surely, 2^101902400042 is an apocalyptic number.

101902400042 is a deficient number, since it is larger than the sum of its proper divisors (61991263318).

101902400042 is a wasteful number, since it uses less digits than its factorization.

101902400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37938445.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 101902400042 its reverse (240004209101), we get a palindrome (341906609143).

The spelling of 101902400042 in words is "one hundred one billion, nine hundred two million, four hundred thousand, forty-two".