42664966 has 16 divisors (see below), whose sum is σ = 64993104. Its totient is φ = 21003264.

The previous prime is 42664949. The next prime is 42664967. The reversal of 42664966 is 66946624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42664967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40786 + ... + 41818.

It is an arithmetic number, because the mean of its divisors is an integer number (4062069).

Almost surely, 2^42664966 is an apocalyptic number.

42664966 is a deficient number, since it is larger than the sum of its proper divisors (22328138).

42664966 is a wasteful number, since it uses less digits than its factorization.

42664966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335.

The product of its digits is 373248, while the sum is 43.

The square root of 42664966 is about 6531.8424659509. The cubic root of 42664966 is about 349.4275431167.

The spelling of 42664966 in words is "forty-two million, six hundred sixty-four thousand, nine hundred sixty-six".