660002542 has 16 divisors (see below), whose sum is σ = 994863312. Its totient is φ = 328386240.

The previous prime is 660002531. The next prime is 660002573. The reversal of 660002542 is 245200066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459858 + ... + 461290.

It is an arithmetic number, because the mean of its divisors is an integer number (62178957).

Almost surely, 2^660002542 is an apocalyptic number.

660002542 is a deficient number, since it is larger than the sum of its proper divisors (334860770).

660002542 is a wasteful number, since it uses less digits than its factorization.

660002542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 660002542 is about 25690.5146308905. The cubic root of 660002542 is about 870.6598869011.

The spelling of 660002542 in words is "six hundred sixty million, two thousand, five hundred forty-two".