242351540 has 24 divisors (see below), whose sum is σ = 509844552. Its totient is φ = 96768000.

The previous prime is 242351513. The next prime is 242351573. The reversal of 242351540 is 45153242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 60155536 + 182196004 = 7756^2 + 13498^2 .

It is a congruent number.

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, 1040 + ... + 22040.

It is an arithmetic number, because the mean of its divisors is an integer number (21243523).

Almost surely, 2^242351540 is an apocalyptic number.

242351540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242351540 is an abundant number, since it is smaller than the sum of its proper divisors (267493012).

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

242351540 is a wasteful number, since it uses less digits than its factorization.

242351540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21587 (or 21585 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 242351540 is about 15567.6440092906. The cubic root of 242351540 is about 623.4695696449.

The spelling of 242351540 in words is "two hundred forty-two million, three hundred fifty-one thousand, five hundred forty".