42179860 has 12 divisors (see below), whose sum is σ = 88577748. Its totient is φ = 16871936.

The previous prime is 42179831. The next prime is 42179869. The reversal of 42179860 is 6897124.

It can be written as a sum of positive squares in 2 ways, for example, as 8678916 + 33500944 = 2946^2 + 5788^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42179869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054477 + ... + 1054516.

It is an arithmetic number, because the mean of its divisors is an integer number (7381479).

Almost surely, 2^42179860 is an apocalyptic number.

It is an amenable number.

42179860 is an abundant number, since it is smaller than the sum of its proper divisors (46397888).

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

42179860 is a wasteful number, since it uses less digits than its factorization.

42179860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109002 (or 2109000 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 42179860 is about 6494.6023742797. The cubic root of 42179860 is about 348.0981468886.

The spelling of 42179860 in words is "forty-two million, one hundred seventy-nine thousand, eight hundred sixty".