1250126149 has 4 divisors (see below), whose sum is σ = 1250343136. Its totient is φ = 1249909164.

The previous prime is 1250126089. The next prime is 1250126167. The reversal of 1250126149 is 9416210521.

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 1250126149 - 2⁷ = 1250126021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1250126149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250126849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99609 + ... + 111454.

It is an arithmetic number, because the mean of its divisors is an integer number (312585784).

Almost surely, 2^1250126149 is an apocalyptic number.

It is an amenable number.

1250126149 is a deficient number, since it is larger than the sum of its proper divisors (216987).

1250126149 is an equidigital number, since it uses as much as digits as its factorization.

1250126149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216986.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1250126149 is about 35357.1230305861. The cubic root of 1250126149 is about 1077.2535811012.

The spelling of 1250126149 in words is "one billion, two hundred fifty million, one hundred twenty-six thousand, one hundred forty-nine".