42025139 has 8 divisors (see below), whose sum is σ = 47920320. Its totient is φ = 36510336.

The previous prime is 42025129. The next prime is 42025187. The reversal of 42025139 is 93152024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42025139 - 2⁸ = 42024883 is a prime.

It is a super-2 number, since 2×42025139² = 3532224615938642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42025129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94859 + ... + 95300.

It is an arithmetic number, because the mean of its divisors is an integer number (5990040).

Almost surely, 2^42025139 is an apocalyptic number.

42025139 is a deficient number, since it is larger than the sum of its proper divisors (5895181).

42025139 is a wasteful number, since it uses less digits than its factorization.

42025139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190189.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 42025139 is about 6482.6799242289. The cubic root of 42025139 is about 347.6720029054.

The spelling of 42025139 in words is "forty-two million, twenty-five thousand, one hundred thirty-nine".