242502381 has 12 divisors (see below), whose sum is σ = 382125120. Its totient is φ = 146971080.

The previous prime is 242502343. The next prime is 242502383. The reversal of 242502381 is 183205242.

242502381 is a `hidden beast` number, since 2 + 425 + 0 + 238 + 1 = 666.

It is not a de Polignac number, because 242502381 - 2²¹ = 240405229 is a prime.

It is a super-2 number, since 2×242502381² = 117614809581338322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242502383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1224661 + ... + 1224858.

It is an arithmetic number, because the mean of its divisors is an integer number (31843760).

Almost surely, 2^242502381 is an apocalyptic number.

It is an amenable number.

242502381 is a deficient number, since it is larger than the sum of its proper divisors (139622739).

242502381 is a wasteful number, since it uses less digits than its factorization.

242502381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449536 (or 2449533 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 242502381 is about 15572.4879515124. The cubic root of 242502381 is about 623.5988931732.

The spelling of 242502381 in words is "two hundred forty-two million, five hundred two thousand, three hundred eighty-one".