126750791 has 4 divisors (see below), whose sum is σ = 127043952. Its totient is φ = 126457632.

The previous prime is 126750781. The next prime is 126750797. The reversal of 126750791 is 197057621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197057621 = 1579 ⋅124799.

It is a cyclic number.

It is not a de Polignac number, because 126750791 - 2²⁶ = 59641927 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 (126750797) 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, 145931 + ... + 146796.

It is an arithmetic number, because the mean of its divisors is an integer number (31760988).

Almost surely, 2^126750791 is an apocalyptic number.

126750791 is a deficient number, since it is larger than the sum of its proper divisors (293161).

126750791 is an equidigital number, since it uses as much as digits as its factorization.

126750791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293160.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 126750791 is about 11258.3653786862. The cubic root of 126750791 is about 502.3235732877.

The spelling of 126750791 in words is "one hundred twenty-six million, seven hundred fifty thousand, seven hundred ninety-one".