242551040 has 36 divisors (see below), whose sum is σ = 580988604. Its totient is φ = 97019904.

The previous prime is 242551007. The next prime is 242551063. The reversal of 242551040 is 40155242.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 103876864 + 138674176 = 10192^2 + 11776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 242550997 and 242551015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93467 + ... + 96026.

Almost surely, 2^242551040 is an apocalyptic number.

242551040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242551040 is an abundant number, since it is smaller than the sum of its proper divisors (338437564).

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

242551040 is an equidigital number, since it uses as much as digits as its factorization.

242551040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189514 (or 189500 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 242551040 is about 15574.0502118107. The cubic root of 242551040 is about 623.6405995256.

The spelling of 242551040 in words is "two hundred forty-two million, five hundred fifty-one thousand, forty".