242643936 has 24 divisors (see below), whose sum is σ = 636940584. Its totient is φ = 80881280.

The previous prime is 242643923. The next prime is 242643937. The reversal of 242643936 is 639346242.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 242643894 and 242643903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242643937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263675 + ... + 1263866.

It is an arithmetic number, because the mean of its divisors is an integer number (26539191).

Almost surely, 2^242643936 is an apocalyptic number.

It is an amenable number.

242643936 is an abundant number, since it is smaller than the sum of its proper divisors (394296648).

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

242643936 is a wasteful number, since it uses less digits than its factorization.

242643936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527554 (or 2527546 counting only the distinct ones).

The product of its digits is 186624, while the sum is 39.

The square root of 242643936 is about 15577.0323232636. The cubic root of 242643936 is about 623.7202065815.

The spelling of 242643936 in words is "two hundred forty-two million, six hundred forty-three thousand, nine hundred thirty-six".