20142942 has 8 divisors (see below), whose sum is σ = 40285896. Its totient is φ = 6714312.

The previous prime is 20142929. The next prime is 20142959. The reversal of 20142942 is 24924102.

It is a sphenic number, since it is the product of 3 distinct primes.

20142942 is an admirable number.

It is a super-2 number, since 2×20142942² = 811476224830728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1678573 + ... + 1678584.

It is an arithmetic number, because the mean of its divisors is an integer number (5035737).

Almost surely, 2^20142942 is an apocalyptic number.

20142942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20142942 is a wasteful number, since it uses less digits than its factorization.

20142942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357162.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20142942 is about 4488.0889028628. The cubic root of 20142942 is about 272.0869009385.

The spelling of 20142942 in words is "twenty million, one hundred forty-two thousand, nine hundred forty-two".