1255430321 has 8 divisors (see below), whose sum is σ = 1313323584. Its totient is φ = 1197812880.

The previous prime is 1255430287. The next prime is 1255430327. The reversal of 1255430321 is 1230345521.

It is a happy number.

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 1255430321 - 2⁶ = 1255430257 is a prime.

It is a super-2 number, since 2×1255430321² = 3152210581772326082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255430327) 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, 59615 + ... + 77876.

It is an arithmetic number, because the mean of its divisors is an integer number (164165448).

Almost surely, 2^1255430321 is an apocalyptic number.

It is an amenable number.

1255430321 is a deficient number, since it is larger than the sum of its proper divisors (57893263).

1255430321 is a wasteful number, since it uses less digits than its factorization.

1255430321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137911.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1255430321 is about 35432.0521703161. The cubic root of 1255430321 is about 1078.7749945044.

Adding to 1255430321 its reverse (1230345521), we get a palindrome (2485775842).

It can be divided in two parts, 12554 and 30321, that added together give a cube (42875 = 35³).

The spelling of 1255430321 in words is "one billion, two hundred fifty-five million, four hundred thirty thousand, three hundred twenty-one".