1142331265 has 4 divisors (see below), whose sum is σ = 1370797524. Its totient is φ = 913865008.

The previous prime is 1142331191. The next prime is 1142331277. The reversal of 1142331265 is 5621332411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 497780721 + 644550544 = 22311^2 + 25388^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142331265 - 2¹⁷ = 1142200193 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, 114233122 + ... + 114233131.

It is an arithmetic number, because the mean of its divisors is an integer number (342699381).

Almost surely, 2^1142331265 is an apocalyptic number.

It is an amenable number.

1142331265 is a deficient number, since it is larger than the sum of its proper divisors (228466259).

1142331265 is an equidigital number, since it uses as much as digits as its factorization.

1142331265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228466258.

The product of its digits is 4320, while the sum is 28.

The square root of 1142331265 is about 33798.3914558075. The cubic root of 1142331265 is about 1045.3555302261.

Adding to 1142331265 its reverse (5621332411), we get a palindrome (6763663676).

The spelling of 1142331265 in words is "one billion, one hundred forty-two million, three hundred thirty-one thousand, two hundred sixty-five".