426139 has 8 divisors (see below), whose sum is σ = 515808. Its totient is φ = 343680.

The previous prime is 426131. The next prime is 426161. The reversal of 426139 is 931624.

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 426139 - 2³ = 426131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426131) 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, 1672 + ... + 1909.

It is an arithmetic number, because the mean of its divisors is an integer number (64476).

2⁴²⁶¹³⁹ is an apocalyptic number.

426139 is a deficient number, since it is larger than the sum of its proper divisors (89669).

426139 is a wasteful number, since it uses less digits than its factorization.

426139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605.

The product of its digits is 1296, while the sum is 25.

The square root of 426139 is about 652.7932291316. The cubic root of 426139 is about 75.2518349240.

It can be divided in two parts, 426 and 139, that added together give a palindrome (565).

The spelling of 426139 in words is "four hundred twenty-six thousand, one hundred thirty-nine".