192424921 has 12 divisors (see below), whose sum is σ = 220625532. Its totient is φ = 167172096.

The previous prime is 192424919. The next prime is 192424933. The reversal of 192424921 is 129424291.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 54597321 + 137827600 = 7389^2 + 11740^2 .

It is not a de Polignac number, because 192424921 - 2¹ = 192424919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192424121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30616 + ... + 36361.

It is an arithmetic number, because the mean of its divisors is an integer number (18385461).

Almost surely, 2^192424921 is an apocalyptic number.

It is an amenable number.

192424921 is a deficient number, since it is larger than the sum of its proper divisors (28200611).

192424921 is a wasteful number, since it uses less digits than its factorization.

192424921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67020 (or 67007 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 192424921 is about 13871.7310022938. The cubic root of 192424921 is about 577.3250993625.

The spelling of 192424921 in words is "one hundred ninety-two million, four hundred twenty-four thousand, nine hundred twenty-one".