20042242398 has 32 divisors (see below), whose sum is σ = 44596933920. Its totient is φ = 6671954880.

The previous prime is 20042242351. The next prime is 20042242453. The reversal of 20042242398 is 89324224002.

20042242398 is a `hidden beast` number, since 20 + 0 + 4 + 2 + 242 + 398 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202765 + ... + 284952.

It is an arithmetic number, because the mean of its divisors is an integer number (1393654185).

Almost surely, 2^20042242398 is an apocalyptic number.

20042242398 is an abundant number, since it is smaller than the sum of its proper divisors (24554691522).

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

20042242398 is a wasteful number, since it uses less digits than its factorization.

20042242398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488489 (or 488483 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 20042242398 in words is "twenty billion, forty-two million, two hundred forty-two thousand, three hundred ninety-eight".