19426942 has 4 divisors (see below), whose sum is σ = 29140416. Its totient is φ = 9713470.

The previous prime is 19426921. The next prime is 19426951. The reversal of 19426942 is 24962491.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24962491 = 113 ⋅220907.

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, 4856734 + ... + 4856737.

It is an arithmetic number, because the mean of its divisors is an integer number (7285104).

Almost surely, 2^19426942 is an apocalyptic number.

19426942 is a deficient number, since it is larger than the sum of its proper divisors (9713474).

19426942 is an equidigital number, since it uses as much as digits as its factorization.

19426942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713473.

The product of its digits is 31104, while the sum is 37.

The square root of 19426942 is about 4407.6004809874. The cubic root of 19426942 is about 268.8240674164.

The spelling of 19426942 in words is "nineteen million, four hundred twenty-six thousand, nine hundred forty-two".