126431 has 6 divisors (see below), whose sum is σ = 132720. Its totient is φ = 120428.

The previous prime is 126421. The next prime is 126433. The reversal of 126431 is 134621.

It is not a de Polignac number, because 126431 - 2¹⁰ = 125407 is a prime.

It is a super-2 number, since 2×126431² = 31969595522, 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 (126433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 410 + ... + 648.

It is an arithmetic number, because the mean of its divisors is an integer number (22120).

2¹²⁶⁴³¹ is an apocalyptic number.

126431 is a deficient number, since it is larger than the sum of its proper divisors (6289).

126431 is an equidigital number, since it uses as much as digits as its factorization.

126431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 262 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 126431 is about 355.5713711760. The cubic root of 126431 is about 50.1900765028.

The spelling of 126431 in words is "one hundred twenty-six thousand, four hundred thirty-one".