242512638 has 16 divisors (see below), whose sum is σ = 485552016. Its totient is φ = 80749760.

The previous prime is 242512559. The next prime is 242512651. The reversal of 242512638 is 836215242.

It is a junction number, because it is equal to n+sod(n) for n = 242512599 and 242512608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15831 + ... + 27122.

It is an arithmetic number, because the mean of its divisors is an integer number (30347001).

Almost surely, 2^242512638 is an apocalyptic number.

242512638 is an abundant number, since it is smaller than the sum of its proper divisors (243039378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242512638 is a wasteful number, since it uses less digits than its factorization.

242512638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43899.

The product of its digits is 23040, while the sum is 33.

The square root of 242512638 is about 15572.8172788356. The cubic root of 242512638 is about 623.6076850645.

The spelling of 242512638 in words is "two hundred forty-two million, five hundred twelve thousand, six hundred thirty-eight".