1255121230 has 32 divisors (see below), whose sum is σ = 2466972288. Its totient is φ = 455968800.

The previous prime is 1255121221. The next prime is 1255121261. The reversal of 1255121230 is 321215521.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123025 + ... + 132835.

It is an arithmetic number, because the mean of its divisors is an integer number (77092884).

Almost surely, 2^1255121230 is an apocalyptic number.

1255121230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255121230 is a deficient number, since it is larger than the sum of its proper divisors (1211851058).

1255121230 is a wasteful number, since it uses less digits than its factorization.

1255121230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10992.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1255121230 is about 35427.6901589703. The cubic root of 1255121230 is about 1078.6864546084.

Adding to 1255121230 its reverse (321215521), we get a palindrome (1576336751).

The spelling of 1255121230 in words is "one billion, two hundred fifty-five million, one hundred twenty-one thousand, two hundred thirty".