242971530 has 32 divisors (see below), whose sum is σ = 583668288. Its totient is φ = 64732800.

The previous prime is 242971523. The next prime is 242971537. The reversal of 242971530 is 35179242.

It is an interprime number because it is at equal distance from previous prime (242971523) and next prime (242971537).

It is a junction number, because it is equal to n+sod(n) for n = 242971491 and 242971500.

It is not an unprimeable number, because it can be changed into a prime (242971537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36565 + ... + 42695.

It is an arithmetic number, because the mean of its divisors is an integer number (18239634).

Almost surely, 2^242971530 is an apocalyptic number.

242971530 is an abundant number, since it is smaller than the sum of its proper divisors (340696758).

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

242971530 is a wasteful number, since it uses less digits than its factorization.

242971530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7462.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 242971530 is about 15587.5440656955. The cubic root of 242971530 is about 624.0007755990. Note that the first 3 decimals are identical.

The spelling of 242971530 in words is "two hundred forty-two million, nine hundred seventy-one thousand, five hundred thirty".