1142165597 has 4 divisors (see below), whose sum is σ = 1142420256. Its totient is φ = 1141910940.

The previous prime is 1142165561. The next prime is 1142165611. The reversal of 1142165597 is 7955612411.

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 1142165597 - 2⁸ = 1142165341 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 (1142165537) 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, 120479 + ... + 129612.

It is an arithmetic number, because the mean of its divisors is an integer number (285605064).

Almost surely, 2^1142165597 is an apocalyptic number.

It is an amenable number.

1142165597 is a deficient number, since it is larger than the sum of its proper divisors (254659).

1142165597 is an equidigital number, since it uses as much as digits as its factorization.

1142165597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254658.

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

The square root of 1142165597 is about 33795.9405402483. The cubic root of 1142165597 is about 1045.3049931248.

The spelling of 1142165597 in words is "one billion, one hundred forty-two million, one hundred sixty-five thousand, five hundred ninety-seven".