126995957 has 4 divisors (see below), whose sum is σ = 138541056. Its totient is φ = 115450860.

The previous prime is 126995941. The next prime is 126995971. The reversal of 126995957 is 759599621.

It is a happy number.

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 126995957 - 2⁴ = 126995941 is a prime.

It is a super-2 number, since 2×126995957² = 32255946188691698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126995899 and 126995908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126995977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5772533 + ... + 5772554.

It is an arithmetic number, because the mean of its divisors is an integer number (34635264).

Almost surely, 2^126995957 is an apocalyptic number.

It is an amenable number.

126995957 is a deficient number, since it is larger than the sum of its proper divisors (11545099).

126995957 is a wasteful number, since it uses less digits than its factorization.

126995957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11545098.

The product of its digits is 1530900, while the sum is 53.

The square root of 126995957 is about 11269.2482890386. The cubic root of 126995957 is about 502.6472355526.

The spelling of 126995957 in words is "one hundred twenty-six million, nine hundred ninety-five thousand, nine hundred fifty-seven".