242661501 has 28 divisors (see below), whose sum is σ = 365219392. Its totient is φ = 161155656.

The previous prime is 242661499. The next prime is 242661557. The reversal of 242661501 is 105166242.

242661501 is a `hidden beast` number, since 2 + 42 + 6 + 615 + 0 + 1 = 666.

It is not a de Polignac number, because 242661501 - 2¹ = 242661499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242661581) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 267090 + ... + 267996.

Almost surely, 2^242661501 is an apocalyptic number.

It is an amenable number.

242661501 is a deficient number, since it is larger than the sum of its proper divisors (122557891).

242661501 is an frugal number, since it uses more digits than its factorization.

242661501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 242661501 is about 15577.5961239210. The cubic root of 242661501 is about 623.7352565916.

The spelling of 242661501 in words is "two hundred forty-two million, six hundred sixty-one thousand, five hundred one".