242257730 has 48 divisors (see below), whose sum is σ = 516213432. Its totient is φ = 81312000.

The previous prime is 242257711. The next prime is 242257739. The reversal of 242257730 is 37752242.

It can be written as a sum of positive squares in 4 ways, for example, as 220195921 + 22061809 = 14839^2 + 4697^2 .

It is not an unprimeable number, because it can be changed into a prime (242257739) 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 23 ways as a sum of consecutive naturals, for example, 8030 + ... + 23430.

Almost surely, 2^242257730 is an apocalyptic number.

242257730 is an abundant number, since it is smaller than the sum of its proper divisors (273955702).

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

242257730 is a wasteful number, since it uses less digits than its factorization.

242257730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15443 (or 15432 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 242257730 is about 15564.6307376693. The cubic root of 242257730 is about 623.3891145775.

The spelling of 242257730 in words is "two hundred forty-two million, two hundred fifty-seven thousand, seven hundred thirty".