42066650 has 12 divisors (see below), whose sum is σ = 78244062. Its totient is φ = 16826640.

The previous prime is 42066643. The next prime is 42066671. The reversal of 42066650 is 5666024.

It can be written as a sum of positive squares in 3 ways, for example, as 28590409 + 13476241 = 5347^2 + 3671^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 420617 + ... + 420716.

Almost surely, 2^42066650 is an apocalyptic number.

42066650 is a deficient number, since it is larger than the sum of its proper divisors (36177412).

42066650 is a wasteful number, since it uses less digits than its factorization.

42066650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841345 (or 841340 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 42066650 is about 6485.8808191332. The cubic root of 42066650 is about 347.7864380870.

The spelling of 42066650 in words is "forty-two million, sixty-six thousand, six hundred fifty".