19420975 has 12 divisors (see below), whose sum is σ = 27522544. Its totient is φ = 13317120.

The previous prime is 19420943. The next prime is 19420979. The reversal of 19420975 is 57902491.

It is not a de Polignac number, because 19420975 - 2⁵ = 19420943 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19420979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55314 + ... + 55663.

Almost surely, 2^19420975 is an apocalyptic number.

19420975 is a deficient number, since it is larger than the sum of its proper divisors (8101569).

19420975 is a wasteful number, since it uses less digits than its factorization.

19420975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110994 (or 110989 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 19420975 is about 4406.9235300831. The cubic root of 19420975 is about 268.7965414258.

The spelling of 19420975 in words is "nineteen million, four hundred twenty thousand, nine hundred seventy-five".