126408121 has 12 divisors (see below), whose sum is σ = 152473152. Its totient is φ = 102645144.

The previous prime is 126408097. The next prime is 126408133. The reversal of 126408121 is 121804621.

It is not a de Polignac number, because 126408121 - 2⁷ = 126407993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126408151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22485 + ... + 27538.

It is an arithmetic number, because the mean of its divisors is an integer number (12706096).

Almost surely, 2^126408121 is an apocalyptic number.

It is an amenable number.

126408121 is a deficient number, since it is larger than the sum of its proper divisors (26065031).

126408121 is an equidigital number, since it uses as much as digits as its factorization.

126408121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50068 (or 50049 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 126408121 is about 11243.1366175103. The cubic root of 126408121 is about 501.8704884865.

The spelling of 126408121 in words is "one hundred twenty-six million, four hundred eight thousand, one hundred twenty-one".