19123642 has 16 divisors (see below), whose sum is σ = 29538432. Its totient is φ = 9280960.

The previous prime is 19123631. The next prime is 19123661. The reversal of 19123642 is 24632191.

It is a self number, because there is not a number n which added to its sum of digits gives 19123642.

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, 11538 + ... + 13090.

It is an arithmetic number, because the mean of its divisors is an integer number (1846152).

Almost surely, 2^19123642 is an apocalyptic number.

19123642 is a deficient number, since it is larger than the sum of its proper divisors (10414790).

19123642 is a wasteful number, since it uses less digits than its factorization.

19123642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733.

The product of its digits is 2592, while the sum is 28.

The square root of 19123642 is about 4373.0586549919. The cubic root of 19123642 is about 267.4177322934.

The spelling of 19123642 in words is "nineteen million, one hundred twenty-three thousand, six hundred forty-two".