1142561597 has 8 divisors (see below), whose sum is σ = 1148762496. Its totient is φ = 1136371392.

The previous prime is 1142561579. The next prime is 1142561603. The reversal of 1142561597 is 7951652411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1142561597 - 2⁶ = 1142561533 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 (1142561897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299333 + ... + 303125.

It is an arithmetic number, because the mean of its divisors is an integer number (143595312).

Almost surely, 2^1142561597 is an apocalyptic number.

It is an amenable number.

1142561597 is a deficient number, since it is larger than the sum of its proper divisors (6200899).

1142561597 is a wasteful number, since it uses less digits than its factorization.

1142561597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5347.

The product of its digits is 75600, while the sum is 41.

The square root of 1142561597 is about 33801.7987243283. The cubic root of 1142561597 is about 1045.4257849926.

The spelling of 1142561597 in words is "one billion, one hundred forty-two million, five hundred sixty-one thousand, five hundred ninety-seven".