1142640313 has 2 divisors, whose sum is σ = 1142640314. Its totient is φ = 1142640312.

The previous prime is 1142640307. The next prime is 1142640337. The reversal of 1142640313 is 3130462411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1125401209 + 17239104 = 33547^2 + 4152^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142640313 - 2¹³ = 1142632121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1142640013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571320156 + 571320157.

It is an arithmetic number, because the mean of its divisors is an integer number (571320157).

Almost surely, 2^1142640313 is an apocalyptic number.

It is an amenable number.

1142640313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142640313 is an equidigital number, since it uses as much as digits as its factorization.

1142640313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1142640313 is about 33802.9630801798. The cubic root of 1142640313 is about 1045.4497924062.

The spelling of 1142640313 in words is "one billion, one hundred forty-two million, six hundred forty thousand, three hundred thirteen".