1142797357 has 4 divisors (see below), whose sum is σ = 1230704860. Its totient is φ = 1054889856.

The previous prime is 1142797319. The next prime is 1142797399. The reversal of 1142797357 is 7537972411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7537972411 = 2621 ⋅2875991.

It can be written as a sum of positive squares in 2 ways, for example, as 111809476 + 1030987881 = 10574^2 + 32109^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142797357 - 2¹¹ = 1142795309 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 (1142797657) 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, 43953732 + ... + 43953757.

It is an arithmetic number, because the mean of its divisors is an integer number (307676215).

Almost surely, 2^1142797357 is an apocalyptic number.

It is an amenable number.

1142797357 is a deficient number, since it is larger than the sum of its proper divisors (87907503).

1142797357 is an equidigital number, since it uses as much as digits as its factorization.

1142797357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87907502.

The product of its digits is 370440, while the sum is 46.

The square root of 1142797357 is about 33805.2859328242. The cubic root of 1142797357 is about 1045.4976856041.

The spelling of 1142797357 in words is "one billion, one hundred forty-two million, seven hundred ninety-seven thousand, three hundred fifty-seven".