126252749 has 16 divisors (see below), whose sum is σ = 146030976. Its totient is φ = 106920000.

The previous prime is 126252703. The next prime is 126252767. The reversal of 126252749 is 947252621.

It is a cyclic number.

It is not a de Polignac number, because 126252749 - 2²⁴ = 109475533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126252799) 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, 317819 + ... + 318215.

It is an arithmetic number, because the mean of its divisors is an integer number (9126936).

Almost surely, 2^126252749 is an apocalyptic number.

It is an amenable number.

126252749 is a deficient number, since it is larger than the sum of its proper divisors (19778227).

126252749 is a wasteful number, since it uses less digits than its factorization.

126252749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its digits is 60480, while the sum is 38.

The square root of 126252749 is about 11236.2248553507. The cubic root of 126252749 is about 501.6647828442.

The spelling of 126252749 in words is "one hundred twenty-six million, two hundred fifty-two thousand, seven hundred forty-nine".