242156455 has 24 divisors (see below), whose sum is σ = 304681536. Its totient is φ = 184677120.

The previous prime is 242156437. The next prime is 242156477. The reversal of 242156455 is 554651242.

It is not a de Polignac number, because 242156455 - 2⁹ = 242155943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242156455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394729 + ... + 395341.

It is an arithmetic number, because the mean of its divisors is an integer number (12695064).

Almost surely, 2^242156455 is an apocalyptic number.

242156455 is a deficient number, since it is larger than the sum of its proper divisors (62525081).

242156455 is an equidigital number, since it uses as much as digits as its factorization.

242156455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 706 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The square root of 242156455 is about 15561.3770277569. The cubic root of 242156455 is about 623.3022339205.

The spelling of 242156455 in words is "two hundred forty-two million, one hundred fifty-six thousand, four hundred fifty-five".