126890371 has 4 divisors (see below), whose sum is σ = 127052392. Its totient is φ = 126728352.

The previous prime is 126890339. The next prime is 126890381. The reversal of 126890371 is 173098621.

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

It is a cyclic number.

It is not a de Polignac number, because 126890371 - 2⁵ = 126890339 is a prime.

It is a super-2 number, since 2×126890371² = 32202332505035282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126890371.

It is not an unprimeable number, because it can be changed into a prime (126890311) 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, 79830 + ... + 81403.

It is an arithmetic number, because the mean of its divisors is an integer number (31763098).

Almost surely, 2^126890371 is an apocalyptic number.

126890371 is a deficient number, since it is larger than the sum of its proper divisors (162021).

126890371 is an equidigital number, since it uses as much as digits as its factorization.

126890371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162020.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 126890371 is about 11264.5626191166. The cubic root of 126890371 is about 502.5078945650.

The spelling of 126890371 in words is "one hundred twenty-six million, eight hundred ninety thousand, three hundred seventy-one".