19231942 has 4 divisors (see below), whose sum is σ = 28847916. Its totient is φ = 9615970.

The previous prime is 19231907. The next prime is 19231943. The reversal of 19231942 is 24913291.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19231943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4807984 + ... + 4807987.

It is an arithmetic number, because the mean of its divisors is an integer number (7211979).

Almost surely, 2^19231942 is an apocalyptic number.

19231942 is a deficient number, since it is larger than the sum of its proper divisors (9615974).

19231942 is an equidigital number, since it uses as much as digits as its factorization.

19231942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9615973.

The product of its digits is 3888, while the sum is 31.

The square root of 19231942 is about 4385.4238107622. The cubic root of 19231942 is about 267.9215910072.

The spelling of 19231942 in words is "nineteen million, two hundred thirty-one thousand, nine hundred forty-two".