242739072 has 64 divisors (see below), whose sum is σ = 716427600. Its totient is φ = 80911872.

The previous prime is 242739053. The next prime is 242739097. The reversal of 242739072 is 270937242.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 31663 + ... + 38574.

Almost surely, 2^242739072 is an apocalyptic number.

It is an amenable number.

242739072 is an abundant number, since it is smaller than the sum of its proper divisors (473688528).

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

242739072 is an equidigital number, since it uses as much as digits as its factorization.

242739072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70260 (or 70242 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 242739072 is about 15580.0857507268. The cubic root of 242739072 is about 623.8017121449.

The spelling of 242739072 in words is "two hundred forty-two million, seven hundred thirty-nine thousand, seventy-two".