126899029 has 4 divisors (see below), whose sum is σ = 129049920. Its totient is φ = 124748140.

The previous prime is 126899021. The next prime is 126899117. The reversal of 126899029 is 920998621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126899029 - 2³ = 126899021 is a prime.

It is a super-2 number, since 2×126899029² = 32206727122285682, 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 126899029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126899021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075357 + ... + 1075474.

It is an arithmetic number, because the mean of its divisors is an integer number (32262480).

Almost surely, 2^126899029 is an apocalyptic number.

It is an amenable number.

126899029 is a deficient number, since it is larger than the sum of its proper divisors (2150891).

126899029 is an equidigital number, since it uses as much as digits as its factorization.

126899029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150890.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 126899029 is about 11264.9469150991. The cubic root of 126899029 is about 502.5193233661.

The spelling of 126899029 in words is "one hundred twenty-six million, eight hundred ninety-nine thousand, twenty-nine".