126991298 has 32 divisors (see below), whose sum is σ = 224121216. Its totient is φ = 52835328.

The previous prime is 126991297. The next prime is 126991301. The reversal of 126991298 is 892199621.

It is a super-2 number, since 2×126991298² = 32253579535449608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126991297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115640 + ... + 116732.

It is an arithmetic number, because the mean of its divisors is an integer number (7003788).

Almost surely, 2^126991298 is an apocalyptic number.

126991298 is a deficient number, since it is larger than the sum of its proper divisors (97129918).

126991298 is a wasteful number, since it uses less digits than its factorization.

126991298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338.

The product of its digits is 139968, while the sum is 47.

The square root of 126991298 is about 11269.0415741535. The cubic root of 126991298 is about 502.6410887372.

The spelling of 126991298 in words is "one hundred twenty-six million, nine hundred ninety-one thousand, two hundred ninety-eight".