1142399597 has 4 divisors (see below), whose sum is σ = 1142936316. Its totient is φ = 1141862880.

The previous prime is 1142399591. The next prime is 1142399611. The reversal of 1142399597 is 7959932411.

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 629558281 + 512841316 = 25091^2 + 22646^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142399597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142399591) 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, 265154 + ... + 269427.

It is an arithmetic number, because the mean of its divisors is an integer number (285734079).

Almost surely, 2^1142399597 is an apocalyptic number.

It is an amenable number.

1142399597 is a deficient number, since it is larger than the sum of its proper divisors (536719).

1142399597 is an equidigital number, since it uses as much as digits as its factorization.

1142399597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536718.

The product of its digits is 612360, while the sum is 50.

The square root of 1142399597 is about 33799.4023172008. The cubic root of 1142399597 is about 1045.3763735116.

The spelling of 1142399597 in words is "one billion, one hundred forty-two million, three hundred ninety-nine thousand, five hundred ninety-seven".