19942430 has 16 divisors (see below), whose sum is σ = 37134720. Its totient is φ = 7701792.

The previous prime is 19942423. The next prime is 19942451. The reversal of 19942430 is 3424991.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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, 34094 + ... + 34673.

It is an arithmetic number, because the mean of its divisors is an integer number (2320920).

Almost surely, 2^19942430 is an apocalyptic number.

19942430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19942430 is a deficient number, since it is larger than the sum of its proper divisors (17192290).

19942430 is a wasteful number, since it uses less digits than its factorization.

19942430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68803.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 19942430 is about 4465.6947947660. The cubic root of 19942430 is about 271.1810629886.

The spelling of 19942430 in words is "nineteen million, nine hundred forty-two thousand, four hundred thirty".