242745510 has 48 divisors (see below), whose sum is σ = 677709936. Its totient is φ = 55484352.

The previous prime is 242745497. The next prime is 242745511. The reversal of 242745510 is 15547242.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242745511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81097 + ... + 84036.

It is an arithmetic number, because the mean of its divisors is an integer number (14118957).

Almost surely, 2^242745510 is an apocalyptic number.

242745510 is an abundant number, since it is smaller than the sum of its proper divisors (434964426).

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

242745510 is a wasteful number, since it uses less digits than its factorization.

242745510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165157 (or 165150 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 242745510 is about 15580.2923592595. The cubic root of 242745510 is about 623.8072269828.

The spelling of 242745510 in words is "two hundred forty-two million, seven hundred forty-five thousand, five hundred ten".