1142640337 has 2 divisors, whose sum is σ = 1142640338. Its totient is φ = 1142640336.

The previous prime is 1142640313. The next prime is 1142640341. The reversal of 1142640337 is 7330462411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129564881 + 13075456 = 33609^2 + 3616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142640337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142640299 and 1142640308.

It is not a weakly prime, because it can be changed into another prime (1142640307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571320168 + 571320169.

It is an arithmetic number, because the mean of its divisors is an integer number (571320169).

Almost surely, 2^1142640337 is an apocalyptic number.

It is an amenable number.

1142640337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142640337 is an equidigital number, since it uses as much as digits as its factorization.

1142640337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1142640337 is about 33802.9634351783. The cubic root of 1142640337 is about 1045.4497997257.

The spelling of 1142640337 in words is "one billion, one hundred forty-two million, six hundred forty thousand, three hundred thirty-seven".