126939149 has 4 divisors (see below), whose sum is σ = 129090720. Its totient is φ = 124787580.

The previous prime is 126939143. The next prime is 126939161. The reversal of 126939149 is 941939621.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 126939149 - 2¹⁶ = 126873613 is a prime.

It is a super-2 number, since 2×126939149² = 32227095097688402, 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 (126939143) 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, 1075697 + ... + 1075814.

It is an arithmetic number, because the mean of its divisors is an integer number (32272680).

Almost surely, 2^126939149 is an apocalyptic number.

It is an amenable number.

126939149 is a deficient number, since it is larger than the sum of its proper divisors (2151571).

126939149 is an equidigital number, since it uses as much as digits as its factorization.

126939149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151570.

The product of its digits is 104976, while the sum is 44.

The square root of 126939149 is about 11266.7275195595. The cubic root of 126939149 is about 502.5722760984.

The spelling of 126939149 in words is "one hundred twenty-six million, nine hundred thirty-nine thousand, one hundred forty-nine".