1240142313 has 16 divisors (see below), whose sum is σ = 1736856576. Its totient is φ = 785571600.

The previous prime is 1240142311. The next prime is 1240142327. The reversal of 1240142313 is 3132410421.

It is not a de Polignac number, because 1240142313 - 2¹ = 1240142311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240142313.

It is not an unprimeable number, because it can be changed into a prime (1240142311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49095 + ... + 69932.

It is an arithmetic number, because the mean of its divisors is an integer number (108553536).

Almost surely, 2^1240142313 is an apocalyptic number.

It is an amenable number.

1240142313 is a deficient number, since it is larger than the sum of its proper divisors (496714263).

1240142313 is a wasteful number, since it uses less digits than its factorization.

1240142313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119204.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1240142313 is about 35215.6543741558. The cubic root of 1240142313 is about 1074.3781694521.

Adding to 1240142313 its reverse (3132410421), we get a palindrome (4372552734).

The spelling of 1240142313 in words is "one billion, two hundred forty million, one hundred forty-two thousand, three hundred thirteen".