20102430402 has 48 divisors (see below), whose sum is σ = 46336054752. Its totient is φ = 6276735360.

The previous prime is 20102430389. The next prime is 20102430437. The reversal of 20102430402 is 20403420102.

20102430402 is a `hidden beast` number, since 20 + 1 + 0 + 243 + 0 + 402 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91108 + ... + 220239.

It is an arithmetic number, because the mean of its divisors is an integer number (965334474).

Almost surely, 2^20102430402 is an apocalyptic number.

20102430402 is an abundant number, since it is smaller than the sum of its proper divisors (26233624350).

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

20102430402 is a wasteful number, since it uses less digits than its factorization.

20102430402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311583 (or 311580 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20102430402 its reverse (20403420102), we get a palindrome (40505850504).

The spelling of 20102430402 in words is "twenty billion, one hundred two million, four hundred thirty thousand, four hundred two".