102400430020242 has 24 divisors (see below), whose sum is σ = 205723368485424. Its totient is φ = 33980411656584.

The previous prime is 102400430020223. The next prime is 102400430020243. The reversal of 102400430020242 is 242020034004201.

It is not an unprimeable number, because it can be changed into a prime (102400430020243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171299068 + ... + 171895815.

It is an arithmetic number, because the mean of its divisors is an integer number (8571807020226).

Almost surely, 2^{102400430020242} is an apocalyptic number.

102400430020242 is an abundant number, since it is smaller than the sum of its proper divisors (103322938465182).

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

102400430020242 is an equidigital number, since it uses as much as digits as its factorization.

102400430020242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343195334 (or 343195111 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 102400430020242 its reverse (242020034004201), we get a palindrome (344420464024443).

The spelling of 102400430020242 in words is "one hundred two trillion, four hundred billion, four hundred thirty million, twenty thousand, two hundred forty-two".