240520542 has 16 divisors (see below), whose sum is σ = 486447120. Its totient is φ = 79272512.

The previous prime is 240520531. The next prime is 240520547. The reversal of 240520542 is 245025042.

It is a happy number.

240520542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×240520542² = 115700262247947528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240520547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224673 + ... + 225740.

It is an arithmetic number, because the mean of its divisors is an integer number (30402945).

Almost surely, 2^240520542 is an apocalyptic number.

240520542 is an abundant number, since it is smaller than the sum of its proper divisors (245926578).

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

240520542 is a wasteful number, since it uses less digits than its factorization.

240520542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450507.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 240520542 is about 15508.7247057906. The cubic root of 240520542 is about 621.8954670402.

Adding to 240520542 its reverse (245025042), we get a palindrome (485545584).

The spelling of 240520542 in words is "two hundred forty million, five hundred twenty thousand, five hundred forty-two".