126736751 has 4 divisors (see below), whose sum is σ = 134191872. Its totient is φ = 119281632.

The previous prime is 126736741. The next prime is 126736759. The reversal of 126736751 is 157637621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126736751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126736759) 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, 3727535 + ... + 3727568.

It is an arithmetic number, because the mean of its divisors is an integer number (33547968).

Almost surely, 2^126736751 is an apocalyptic number.

126736751 is a deficient number, since it is larger than the sum of its proper divisors (7455121).

126736751 is an equidigital number, since it uses as much as digits as its factorization.

126736751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7455120.

The product of its digits is 52920, while the sum is 38.

The square root of 126736751 is about 11257.7418250731. The cubic root of 126736751 is about 502.3050253867.

The spelling of 126736751 in words is "one hundred twenty-six million, seven hundred thirty-six thousand, seven hundred fifty-one".