42130039 has 4 divisors (see below), whose sum is σ = 48148624. Its totient is φ = 36111456.

The previous prime is 42130021. The next prime is 42130061. The reversal of 42130039 is 93003124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42130039 - 2⁷ = 42129911 is a prime.

It is a super-2 number, since 2×42130039² = 3549880372283042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42130009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3009282 + ... + 3009295.

It is an arithmetic number, because the mean of its divisors is an integer number (12037156).

Almost surely, 2^42130039 is an apocalyptic number.

42130039 is a deficient number, since it is larger than the sum of its proper divisors (6018585).

42130039 is an equidigital number, since it uses as much as digits as its factorization.

42130039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6018584.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 42130039 is about 6490.7656713211. The cubic root of 42130039 is about 347.9610401402.

The spelling of 42130039 in words is "forty-two million, one hundred thirty thousand, thirty-nine".