42138074 has 32 divisors (see below), whose sum is σ = 71383680. Its totient is φ = 18491200.

The previous prime is 42138059. The next prime is 42138077. The reversal of 42138074 is 47083124.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42138077) 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, 82532 + ... + 83040.

It is an arithmetic number, because the mean of its divisors is an integer number (2230740).

Almost surely, 2^42138074 is an apocalyptic number.

42138074 is a deficient number, since it is larger than the sum of its proper divisors (29245606).

42138074 is a wasteful number, since it uses less digits than its factorization.

42138074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 42138074 is about 6491.3845980653. The cubic root of 42138074 is about 347.9831596642.

The spelling of 42138074 in words is "forty-two million, one hundred thirty-eight thousand, seventy-four".