126889 has 4 divisors (see below), whose sum is σ = 145024. Its totient is φ = 108756.

The previous prime is 126859. The next prime is 126913. The reversal of 126889 is 988621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 988621 = 31 ⋅31891.

It is a cyclic number.

It is not a de Polignac number, because 126889 - 2⁵ = 126857 is a prime.

It is a super-2 number, since 2×126889² = 32201636642, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (126839) 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, 9057 + ... + 9070.

It is an arithmetic number, because the mean of its divisors is an integer number (36256).

2¹²⁶⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

126889 is a deficient number, since it is larger than the sum of its proper divisors (18135).

126889 is an equidigital number, since it uses as much as digits as its factorization.

126889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18134.

The product of its digits is 6912, while the sum is 34.

The square root of 126889 is about 356.2148228247. The cubic root of 126889 is about 50.2506084759.

The spelling of 126889 in words is "one hundred twenty-six thousand, eight hundred eighty-nine".