126990718 has 16 divisors (see below), whose sum is σ = 202770000. Its totient is φ = 59476032.

The previous prime is 126990713. The next prime is 126990733. The reversal of 126990718 is 817099621.

It is a super-2 number, since 2×126990718² = 32253284916311048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126990713) 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 7 ways as a sum of consecutive naturals, for example, 15393 + ... + 22156.

It is an arithmetic number, because the mean of its divisors is an integer number (12673125).

Almost surely, 2^126990718 is an apocalyptic number.

126990718 is a deficient number, since it is larger than the sum of its proper divisors (75779282).

126990718 is a wasteful number, since it uses less digits than its factorization.

126990718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37659.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 126990718 is about 11269.0158399037. The cubic root of 126990718 is about 502.6403235082.

The spelling of 126990718 in words is "one hundred twenty-six million, nine hundred ninety thousand, seven hundred eighteen".