242551312 has 10 divisors (see below), whose sum is σ = 469943198. Its totient is φ = 121275648.

The previous prime is 242551303. The next prime is 242551319. The reversal of 242551312 is 213155242.

It can be written as a sum of positive squares in only one way, i.e., 159668496 + 82882816 = 12636^2 + 9104^2 .

It is a super-2 number, since 2×242551312² = 117662277905842688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242551319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7579713 + ... + 7579744.

Almost surely, 2^242551312 is an apocalyptic number.

It is an amenable number.

242551312 is a deficient number, since it is larger than the sum of its proper divisors (227391886).

242551312 is a wasteful number, since it uses less digits than its factorization.

242551312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15159465 (or 15159459 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 242551312 is about 15574.0589442830. The cubic root of 242551312 is about 623.6408326451.

The spelling of 242551312 in words is "two hundred forty-two million, five hundred fifty-one thousand, three hundred twelve".