126594891 has 12 divisors (see below), whose sum is σ = 192483720. Its totient is φ = 79954560.

The previous prime is 126594887. The next prime is 126594913. The reversal of 126594891 is 198495621.

It is not a de Polignac number, because 126594891 - 2² = 126594887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126594821) 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 11 ways as a sum of consecutive naturals, for example, 369990 + ... + 370331.

It is an arithmetic number, because the mean of its divisors is an integer number (16040310).

Almost surely, 2^126594891 is an apocalyptic number.

126594891 is a deficient number, since it is larger than the sum of its proper divisors (65888829).

126594891 is a wasteful number, since it uses less digits than its factorization.

126594891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740346 (or 740343 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 126594891 is about 11251.4395079030. The cubic root of 126594891 is about 502.1175407160.

The spelling of 126594891 in words is "one hundred twenty-six million, five hundred ninety-four thousand, eight hundred ninety-one".