1275116239 has 4 divisors (see below), whose sum is σ = 1342227640. Its totient is φ = 1208004840.

The previous prime is 1275116233. The next prime is 1275116243. The reversal of 1275116239 is 9326115721.

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 1275116239 - 2¹⁷ = 1274985167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1275116198 and 1275116207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275116233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33555672 + ... + 33555709.

It is an arithmetic number, because the mean of its divisors is an integer number (335556910).

Almost surely, 2^1275116239 is an apocalyptic number.

1275116239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1275116239 is a deficient number, since it is larger than the sum of its proper divisors (67111401).

1275116239 is an equidigital number, since it uses as much as digits as its factorization.

1275116239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67111400.

The product of its digits is 22680, while the sum is 37.

The square root of 1275116239 is about 35708.7697771850. The cubic root of 1275116239 is about 1084.3843942845.

The spelling of 1275116239 in words is "one billion, two hundred seventy-five million, one hundred sixteen thousand, two hundred thirty-nine".