19042431 has 16 divisors (see below), whose sum is σ = 27328608. Its totient is φ = 11750400.

The previous prime is 19042417. The next prime is 19042433. The reversal of 19042431 is 13424091.

It is not a de Polignac number, because 19042431 - 2¹⁵ = 19009663 is a prime.

It is a super-2 number, since 2×19042431² = 725228356779522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19042433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51 + ... + 6171.

It is an arithmetic number, because the mean of its divisors is an integer number (1708038).

Almost surely, 2^19042431 is an apocalyptic number.

19042431 is a deficient number, since it is larger than the sum of its proper divisors (8286177).

19042431 is a wasteful number, since it uses less digits than its factorization.

19042431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 19042431 is about 4363.7633987190. The cubic root of 19042431 is about 267.0386539445.

The spelling of 19042431 in words is "nineteen million, forty-two thousand, four hundred thirty-one".