242949138 has 64 divisors (see below), whose sum is σ = 526279680. Its totient is φ = 74579648.

The previous prime is 242949131. The next prime is 242949151. The reversal of 242949138 is 831949242.

242949138 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 242949138.

It is not an unprimeable number, because it can be changed into a prime (242949131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 431245 + ... + 431807.

It is an arithmetic number, because the mean of its divisors is an integer number (8223120).

Almost surely, 2^242949138 is an apocalyptic number.

242949138 is an abundant number, since it is smaller than the sum of its proper divisors (283330542).

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

242949138 is a wasteful number, since it uses less digits than its factorization.

242949138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its digits is 124416, while the sum is 42.

The square root of 242949138 is about 15586.8257833338. The cubic root of 242949138 is about 623.9816059256.

The spelling of 242949138 in words is "two hundred forty-two million, nine hundred forty-nine thousand, one hundred thirty-eight".