1255042123315 has 4 divisors (see below), whose sum is σ = 1506050547984. Its totient is φ = 1004033698648.

The previous prime is 1255042123241. The next prime is 1255042123331. The reversal of 1255042123315 is 5133212405521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1255042123315 - 2²⁵ = 1255008568883 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125504212327 + ... + 125504212336.

It is an arithmetic number, because the mean of its divisors is an integer number (376512636996).

Almost surely, 2^{1255042123315} is an apocalyptic number.

1255042123315 is a deficient number, since it is larger than the sum of its proper divisors (251008424669).

1255042123315 is an equidigital number, since it uses as much as digits as its factorization.

1255042123315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251008424668.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 1255042123315 its reverse (5133212405521), we get a palindrome (6388254528836).

The spelling of 1255042123315 in words is "one trillion, two hundred fifty-five billion, forty-two million, one hundred twenty-three thousand, three hundred fifteen".