20403230023242 has 80 divisors (see below), whose sum is σ = 50110935535584. Its totient is φ = 6153494508000.

The previous prime is 20403230023201. The next prime is 20403230023247. The reversal of 20403230023242 is 24232003230402.

It is a happy number.

20403230023242 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 32 + 300 + 2 + 324 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20403230023247) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26755809 + ... + 27507812.

Almost surely, 2^{20403230023242} is an apocalyptic number.

20403230023242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20403230023242 is an abundant number, since it is smaller than the sum of its proper divisors (29707705512342).

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

20403230023242 is a wasteful number, since it uses less digits than its factorization.

20403230023242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54263857 (or 54263848 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20403230023242 its reverse (24232003230402), we get a palindrome (44635233253644).

The spelling of 20403230023242 in words is "twenty trillion, four hundred three billion, two hundred thirty million, twenty-three thousand, two hundred forty-two".