666032542 has 16 divisors (see below), whose sum is σ = 1142474112. Its totient is φ = 285266520.

The previous prime is 666032537. The next prime is 666032557. The reversal of 666032542 is 245230666.

It is a junction number, because it is equal to n+sod(n) for n = 666032498 and 666032507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10317 + ... + 37927.

It is an arithmetic number, because the mean of its divisors is an integer number (71404632).

Almost surely, 2^666032542 is an apocalyptic number.

666032542 is a deficient number, since it is larger than the sum of its proper divisors (476441570).

666032542 is a wasteful number, since it uses less digits than its factorization.

666032542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29343.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 666032542 is about 25807.6062818697. The cubic root of 666032542 is about 873.3033974096.

The spelling of 666032542 in words is "six hundred sixty-six million, thirty-two thousand, five hundred forty-two".