19401942 has 24 divisors (see below), whose sum is σ = 45139896. Its totient is φ = 5543328.

The previous prime is 19401937. The next prime is 19401961. The reversal of 19401942 is 24910491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32703 + ... + 33290.

It is an arithmetic number, because the mean of its divisors is an integer number (1880829).

Almost surely, 2^19401942 is an apocalyptic number.

19401942 is an abundant number, since it is smaller than the sum of its proper divisors (25737954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19401942 is a wasteful number, since it uses less digits than its factorization.

19401942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66012 (or 66005 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 19401942 is about 4404.7635577860. The cubic root of 19401942 is about 268.7087038044.

The spelling of 19401942 in words is "nineteen million, four hundred one thousand, nine hundred forty-two".