1255121 has 8 divisors (see below), whose sum is σ = 1510080. Its totient is φ = 1019088.

The previous prime is 1255117. The next prime is 1255123. The reversal of 1255121 is 1215521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1255121 - 2² = 1255117 is a prime.

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 1255121.

It is not an unprimeable number, because it can be changed into a prime (1255123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4586 + ... + 4851.

It is an arithmetic number, because the mean of its divisors is an integer number (188760).

2^1255121 is an apocalyptic number.

It is an amenable number.

1255121 is a deficient number, since it is larger than the sum of its proper divisors (254959).

1255121 is an equidigital number, since it uses as much as digits as its factorization.

1255121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9463.

The product of its digits is 100, while the sum is 17.

The square root of 1255121 is about 1120.3218287617. The cubic root of 1255121 is about 107.8686388719.

The spelling of 1255121 in words is "one million, two hundred fifty-five thousand, one hundred twenty-one".