42420066 has 32 divisors (see below), whose sum is σ = 96743808. Its totient is φ = 12284160.

The previous prime is 42420031. The next prime is 42420067. The reversal of 42420066 is 66002424.

It is not an unprimeable number, because it can be changed into a prime (42420067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14670 + ... + 17321.

It is an arithmetic number, because the mean of its divisors is an integer number (3023244).

Almost surely, 2^42420066 is an apocalyptic number.

42420066 is an abundant number, since it is smaller than the sum of its proper divisors (54323742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42420066 is a wasteful number, since it uses less digits than its factorization.

42420066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32026.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 42420066 is about 6513.0688619114. The cubic root of 42420066 is about 348.7576799737.

The spelling of 42420066 in words is "forty-two million, four hundred twenty thousand, sixty-six".