242185156 has 6 divisors (see below), whose sum is σ = 423824030. Its totient is φ = 121092576.

The previous prime is 242185129. The next prime is 242185171. The reversal of 242185156 is 651581242.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 124679556 + 117505600 = 11166^2 + 10840^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30273141 + ... + 30273148.

Almost surely, 2^242185156 is an apocalyptic number.

It is an amenable number.

242185156 is a deficient number, since it is larger than the sum of its proper divisors (181638874).

242185156 is a wasteful number, since it uses less digits than its factorization.

242185156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60546293 (or 60546291 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 242185156 is about 15562.2991874594. The cubic root of 242185156 is about 623.3268580706.

The spelling of 242185156 in words is "two hundred forty-two million, one hundred eighty-five thousand, one hundred fifty-six".