192439842 has 32 divisors (see below), whose sum is σ = 440294400. Its totient is φ = 54928848.

The previous prime is 192439831. The next prime is 192439843. The reversal of 192439842 is 248934291.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 192439794 and 192439803.

It is not an unprimeable number, because it can be changed into a prime (192439843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64009 + ... + 66947.

It is an arithmetic number, because the mean of its divisors is an integer number (13759200).

Almost surely, 2^192439842 is an apocalyptic number.

192439842 is an abundant number, since it is smaller than the sum of its proper divisors (247854558).

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

192439842 is a wasteful number, since it uses less digits than its factorization.

192439842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510.

The product of its digits is 124416, while the sum is 42.

The square root of 192439842 is about 13872.2688122744. The cubic root of 192439842 is about 577.3400212779.

The spelling of 192439842 in words is "one hundred ninety-two million, four hundred thirty-nine thousand, eight hundred forty-two".