42669684 has 36 divisors (see below), whose sum is σ = 110494020. Its totient is φ = 13875840.

The previous prime is 42669673. The next prime is 42669689. The reversal of 42669684 is 48696624.

It can be written as a sum of positive squares in 2 ways, for example, as 25280784 + 17388900 = 5028^2 + 4170^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42669689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12979 + ... + 15930.

Almost surely, 2^42669684 is an apocalyptic number.

It is an amenable number.

42669684 is an abundant number, since it is smaller than the sum of its proper divisors (67824336).

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

42669684 is a wasteful number, since it uses less digits than its factorization.

42669684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28960 (or 28955 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 42669684 is about 6532.2036098089. The cubic root of 42669684 is about 349.4404228362.

The spelling of 42669684 in words is "forty-two million, six hundred sixty-nine thousand, six hundred eighty-four".