20259442942 has 16 divisors (see below), whose sum is σ = 30761090640. Its totient is φ = 10005792192.

The previous prime is 20259442939. The next prime is 20259442969. The reversal of 20259442942 is 24924495202.

It is a congruent number.

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, 1375288 + ... + 1389940.

It is an arithmetic number, because the mean of its divisors is an integer number (1922568165).

Almost surely, 2^20259442942 is an apocalyptic number.

20259442942 is a deficient number, since it is larger than the sum of its proper divisors (10501647698).

20259442942 is a wasteful number, since it uses less digits than its factorization.

20259442942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23067.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 20259442942 in words is "twenty billion, two hundred fifty-nine million, four hundred forty-two thousand, nine hundred forty-two".