126191793 has 72 divisors (see below), whose sum is σ = 220970304. Its totient is φ = 62674560.

The previous prime is 126191783. The next prime is 126191801. The reversal of 126191793 is 397191621.

It is a happy number.

It is not a de Polignac number, because 126191793 - 2⁶ = 126191729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126191743) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3410571 + ... + 3410607.

It is an arithmetic number, because the mean of its divisors is an integer number (3069032).

Almost surely, 2^126191793 is an apocalyptic number.

126191793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

126191793 is a deficient number, since it is larger than the sum of its proper divisors (94778511).

126191793 is a wasteful number, since it uses less digits than its factorization.

126191793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 91 counting only the distinct ones).

The product of its digits is 20412, while the sum is 39.

The square root of 126191793 is about 11233.5120510017. The cubic root of 126191793 is about 501.5840337083.

The spelling of 126191793 in words is "one hundred twenty-six million, one hundred ninety-one thousand, seven hundred ninety-three".