42512666 has 16 divisors (see below), whose sum is σ = 75392640. Its totient is φ = 17591280.

The previous prime is 42512651. The next prime is 42512677. The reversal of 42512666 is 66621524.

It is a Curzon 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, 51950 + ... + 52761.

It is an arithmetic number, because the mean of its divisors is an integer number (4712040).

Almost surely, 2^42512666 is an apocalyptic number.

42512666 is a deficient number, since it is larger than the sum of its proper divisors (32879974).

42512666 is a wasteful number, since it uses less digits than its factorization.

42512666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104749.

The product of its digits is 17280, while the sum is 32.

The square root of 42512666 is about 6520.1737706905. The cubic root of 42512666 is about 349.0112666483.

The spelling of 42512666 in words is "forty-two million, five hundred twelve thousand, six hundred sixty-six".