126125949 has 16 divisors (see below), whose sum is σ = 175800320. Its totient is φ = 80336880.

The previous prime is 126125927. The next prime is 126125953. The reversal of 126125949 is 949521621.

It is not a de Polignac number, because 126125949 - 2¹⁷ = 125994877 is a prime.

It is a super-2 number, since 2×126125949² = 31815510022301202, 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 (126125999) 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, 1237 + ... + 15930.

It is an arithmetic number, because the mean of its divisors is an integer number (10987520).

Almost surely, 2^126125949 is an apocalyptic number.

It is an amenable number.

126125949 is a deficient number, since it is larger than the sum of its proper divisors (49674371).

126125949 is a wasteful number, since it uses less digits than its factorization.

126125949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17280.

The product of its digits is 38880, while the sum is 39.

The square root of 126125949 is about 11230.5809733958. The cubic root of 126125949 is about 501.4967801606.

The spelling of 126125949 in words is "one hundred twenty-six million, one hundred twenty-five thousand, nine hundred forty-nine".