242473231 has 72 divisors (see below), whose sum is σ = 351873312. Its totient is φ = 162518400.

The previous prime is 242473219. The next prime is 242473243. The reversal of 242473231 is 132374242.

242473231 is a nontrivial binomial coefficient, being equal to C(22022, 2).

It is an interprime number because it is at equal distance from previous prime (242473219) and next prime (242473243).

It is not a de Polignac number, because 242473231 - 2⁹ = 242472719 is a prime.

It is a super-2 number, since 2×242473231² = 117586535503158722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242473231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242473331) by changing a digit.

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 in 71 ways as a sum of consecutive naturals, for example, 3974941 + ... + 3975001.

Almost surely, 2^242473231 is an apocalyptic number.

242473231 is the 22021-st triangular number and also the 11011-st hexagonal number.

242473231 is the 7341-st centered nonagonal number.

242473231 is a deficient number, since it is larger than the sum of its proper divisors (109400081).

242473231 is a wasteful number, since it uses less digits than its factorization.

242473231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 111 counting only the distinct ones).

The product of its digits is 8064, while the sum is 28.

The square root of 242473231 is about 15571.5519778858. The cubic root of 242473231 is about 623.5739056026.

The spelling of 242473231 in words is "two hundred forty-two million, four hundred seventy-three thousand, two hundred thirty-one".