126373993 has 4 divisors (see below), whose sum is σ = 128260240. Its totient is φ = 124487748.

The previous prime is 126373969. The next prime is 126373999. The reversal of 126373993 is 399373621.

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 126373993 - 2²⁵ = 92819561 is a prime.

It is a super-2 number, since 2×126373993² = 31940772213528098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126373999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943023 + ... + 943156.

It is an arithmetic number, because the mean of its divisors is an integer number (32065060).

Almost surely, 2^126373993 is an apocalyptic number.

It is an amenable number.

126373993 is a deficient number, since it is larger than the sum of its proper divisors (1886247).

126373993 is an equidigital number, since it uses as much as digits as its factorization.

126373993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886246.

The product of its digits is 183708, while the sum is 43.

The square root of 126373993 is about 11241.6187891246. The cubic root of 126373993 is about 501.8253189791.

The spelling of 126373993 in words is "one hundred twenty-six million, three hundred seventy-three thousand, nine hundred ninety-three".