126820929 has 16 divisors (see below), whose sum is σ = 173500992. Its totient is φ = 82372608.

The previous prime is 126820927. The next prime is 126820933. The reversal of 126820929 is 929028621.

It is not a de Polignac number, because 126820929 - 2¹ = 126820927 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126820927) 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, 14689 + ... + 21665.

It is an arithmetic number, because the mean of its divisors is an integer number (10843812).

Almost surely, 2^126820929 is an apocalyptic number.

It is an amenable number.

126820929 is a deficient number, since it is larger than the sum of its proper divisors (46680063).

126820929 is an equidigital number, since it uses as much as digits as its factorization.

126820929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 126820929 is about 11261.4798761086. The cubic root of 126820929 is about 502.4162103801.

The spelling of 126820929 in words is "one hundred twenty-six million, eight hundred twenty thousand, nine hundred twenty-nine".