20176942 has 4 divisors (see below), whose sum is σ = 30265416. Its totient is φ = 10088470.

The previous prime is 20176931. The next prime is 20176967. The reversal of 20176942 is 24967102.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5044234 + ... + 5044237.

It is an arithmetic number, because the mean of its divisors is an integer number (7566354).

Almost surely, 2^20176942 is an apocalyptic number.

20176942 is a deficient number, since it is larger than the sum of its proper divisors (10088474).

20176942 is a wasteful number, since it uses less digits than its factorization.

20176942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10088473.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20176942 is about 4491.8751095728. The cubic root of 20176942 is about 272.2399033235.

The spelling of 20176942 in words is "twenty million, one hundred seventy-six thousand, nine hundred forty-two".