20124023402 has 16 divisors (see below), whose sum is σ = 34512823680. Its totient is φ = 8620957008.

The previous prime is 20124023393. The next prime is 20124023441. The reversal of 20124023402 is 20432042102.

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, 267398 + ... + 334289.

It is an arithmetic number, because the mean of its divisors is an integer number (2157051480).

Almost surely, 2^20124023402 is an apocalyptic number.

20124023402 is a deficient number, since it is larger than the sum of its proper divisors (14388800278).

20124023402 is a wasteful number, since it uses less digits than its factorization.

20124023402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604085.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20124023402 its reverse (20432042102), we get a palindrome (40556065504).

The spelling of 20124023402 in words is "twenty billion, one hundred twenty-four million, twenty-three thousand, four hundred two".