126421125 has 32 divisors (see below), whose sum is σ = 211116672. Its totient is φ = 67184000.

The previous prime is 126421091. The next prime is 126421159. The reversal of 126421125 is 521124621.

It is an interprime number because it is at equal distance from previous prime (126421091) and next prime (126421159).

It is not a de Polignac number, because 126421125 - 2¹⁰ = 126420101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126421095 and 126421104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165745 + ... + 166505.

It is an arithmetic number, because the mean of its divisors is an integer number (6597396).

Almost surely, 2^126421125 is an apocalyptic number.

126421125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126421125 is a deficient number, since it is larger than the sum of its proper divisors (84695547).

126421125 is an equidigital number, since it uses as much as digits as its factorization.

126421125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1212 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 126421125 is about 11243.7149110069. The cubic root of 126421125 is about 501.8876975603.

Adding to 126421125 its reverse (521124621), we get a palindrome (647545746).

The spelling of 126421125 in words is "one hundred twenty-six million, four hundred twenty-one thousand, one hundred twenty-five".