242515511 has 16 divisors (see below), whose sum is σ = 286875648. Its totient is φ = 200620800.

The previous prime is 242515499. The next prime is 242515541. The reversal of 242515511 is 115515242.

It is a cyclic number.

It is not a de Polignac number, because 242515511 - 2¹⁸ = 242253367 is a prime.

It is a super-2 number, since 2×242515511² = 117627546151182242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242515541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92231 + ... + 94823.

It is an arithmetic number, because the mean of its divisors is an integer number (17929728).

Almost surely, 2^242515511 is an apocalyptic number.

242515511 is a deficient number, since it is larger than the sum of its proper divisors (44360137).

242515511 is a wasteful number, since it uses less digits than its factorization.

242515511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062.

The product of its digits is 2000, while the sum is 26.

The square root of 242515511 is about 15572.9095226294. The cubic root of 242515511 is about 623.6101476410.

The spelling of 242515511 in words is "two hundred forty-two million, five hundred fifteen thousand, five hundred eleven".