1139255241 has 4 divisors (see below), whose sum is σ = 1519006992. Its totient is φ = 759503492.

The previous prime is 1139255237. The next prime is 1139255291. The reversal of 1139255241 is 1425529311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1139255241 - 2² = 1139255237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1139255291) 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, 189875871 + ... + 189875876.

It is an arithmetic number, because the mean of its divisors is an integer number (379751748).

Almost surely, 2^1139255241 is an apocalyptic number.

It is an amenable number.

1139255241 is a deficient number, since it is larger than the sum of its proper divisors (379751751).

1139255241 is an equidigital number, since it uses as much as digits as its factorization.

1139255241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379751750.

The product of its digits is 10800, while the sum is 33.

The square root of 1139255241 is about 33752.8553014408. The cubic root of 1139255241 is about 1044.4163895558.

The spelling of 1139255241 in words is "one billion, one hundred thirty-nine million, two hundred fifty-five thousand, two hundred forty-one".