126992011 has 4 divisors (see below), whose sum is σ = 127108872. Its totient is φ = 126875152.

The previous prime is 126991961. The next prime is 126992051. The reversal of 126992011 is 110299621.

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 126992011 - 2⁹ = 126991499 is a prime.

It is a super-2 number, since 2×126992011² = 32253941715648242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126992051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56785 + ... + 58978.

It is an arithmetic number, because the mean of its divisors is an integer number (31777218).

Almost surely, 2^126992011 is an apocalyptic number.

126992011 is a deficient number, since it is larger than the sum of its proper divisors (116861).

126992011 is a wasteful number, since it uses less digits than its factorization.

126992011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116860.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 126992011 is about 11269.0732094525. The cubic root of 126992011 is about 502.6420294380.

The spelling of 126992011 in words is "one hundred twenty-six million, nine hundred ninety-two thousand, eleven".