242781906 has 16 divisors (see below), whose sum is σ = 485717184. Its totient is φ = 80901744.

The previous prime is 242781887. The next prime is 242781911. The reversal of 242781906 is 609187242.

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, 31200 + ... + 38196.

It is an arithmetic number, because the mean of its divisors is an integer number (30357324).

Almost surely, 2^242781906 is an apocalyptic number.

242781906 is an abundant number, since it is smaller than the sum of its proper divisors (242935278).

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

242781906 is a wasteful number, since it uses less digits than its factorization.

242781906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12785.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 242781906 is about 15581.4603295070. The cubic root of 242781906 is about 623.8384022291.

The spelling of 242781906 in words is "two hundred forty-two million, seven hundred eighty-one thousand, nine hundred six".