1255121323 has 8 divisors (see below), whose sum is σ = 1349291520. Its totient is φ = 1163762280.

The previous prime is 1255121311. The next prime is 1255121327. The reversal of 1255121323 is 3231215521.

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

It is a cyclic number.

It is not a de Polignac number, because 1255121323 - 2¹³ = 1255113131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255121327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701863 + ... + 703648.

It is an arithmetic number, because the mean of its divisors is an integer number (168661440).

Almost surely, 2^1255121323 is an apocalyptic number.

1255121323 is a deficient number, since it is larger than the sum of its proper divisors (94170197).

1255121323 is a wasteful number, since it uses less digits than its factorization.

1255121323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405577.

The product of its digits is 1800, while the sum is 25.

The square root of 1255121323 is about 35427.6914715029. The cubic root of 1255121323 is about 1078.6864812506.

Adding to 1255121323 its reverse (3231215521), we get a palindrome (4486336844).

The spelling of 1255121323 in words is "one billion, two hundred fifty-five million, one hundred twenty-one thousand, three hundred twenty-three".