242540087 has 8 divisors (see below), whose sum is σ = 248963232. Its totient is φ = 236196000.

The previous prime is 242540059. The next prime is 242540099. The reversal of 242540087 is 780045242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242540087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242540057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13523 + ... + 25844.

It is an arithmetic number, because the mean of its divisors is an integer number (31120404).

Almost surely, 2^242540087 is an apocalyptic number.

242540087 is a deficient number, since it is larger than the sum of its proper divisors (6423145).

242540087 is a wasteful number, since it uses less digits than its factorization.

242540087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39529.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 242540087 is about 15573.6985652092. The cubic root of 242540087 is about 623.6312120329.

The spelling of 242540087 in words is "two hundred forty-two million, five hundred forty thousand, eighty-seven".