240838542 has 32 divisors (see below), whose sum is σ = 611654400. Its totient is φ = 68810904.

The previous prime is 240838537. The next prime is 240838561. The reversal of 240838542 is 245838042.

It is a junction number, because it is equal to n+sod(n) for n = 240838497 and 240838506.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 318192 + ... + 318947.

It is an arithmetic number, because the mean of its divisors is an integer number (19114200).

Almost surely, 2^240838542 is an apocalyptic number.

240838542 is an abundant number, since it is smaller than the sum of its proper divisors (370815858).

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

240838542 is a wasteful number, since it uses less digits than its factorization.

240838542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637157 (or 637151 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 240838542 is about 15518.9736129681. The cubic root of 240838542 is about 622.1694223881.

The spelling of 240838542 in words is "two hundred forty million, eight hundred thirty-eight thousand, five hundred forty-two".