425139 has 16 divisors (see below), whose sum is σ = 666624. Its totient is φ = 237600.

The previous prime is 425123. The next prime is 425147. The reversal of 425139 is 931524.

It is not a de Polignac number, because 425139 - 2⁴ = 425123 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425139.

It is not an unprimeable number, because it can be changed into a prime (425149) 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, 67 + ... + 924.

It is an arithmetic number, because the mean of its divisors is an integer number (41664).

2⁴²⁵¹³⁹ is an apocalyptic number.

425139 is a deficient number, since it is larger than the sum of its proper divisors (241485).

425139 is a wasteful number, since it uses less digits than its factorization.

425139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018.

The product of its digits is 1080, while the sum is 24.

The square root of 425139 is about 652.0268399384. The cubic root of 425139 is about 75.1929255266.

The spelling of 425139 in words is "four hundred twenty-five thousand, one hundred thirty-nine".