660240542 has 16 divisors (see below), whose sum is σ = 1100948352. Its totient is φ = 294896160.

The previous prime is 660240527. The next prime is 660240547. The reversal of 660240542 is 245042066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660240547) 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 7 ways as a sum of consecutive naturals, for example, 408773 + ... + 410384.

It is an arithmetic number, because the mean of its divisors is an integer number (68809272).

Almost surely, 2^660240542 is an apocalyptic number.

660240542 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

660240542 is a deficient number, since it is larger than the sum of its proper divisors (440707810).

660240542 is a wasteful number, since it uses less digits than its factorization.

660240542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819203.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 660240542 is about 25695.1462731777. The cubic root of 660240542 is about 870.7645289982.

The spelling of 660240542 in words is "six hundred sixty million, two hundred forty thousand, five hundred forty-two".