1401243013 has 2 divisors, whose sum is σ = 1401243014. Its totient is φ = 1401243012.

The previous prime is 1401243001. The next prime is 1401243049. The reversal of 1401243013 is 3103421041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1135487809 + 265755204 = 33697^2 + 16302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401243013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401243113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700621506 + 700621507.

It is an arithmetic number, because the mean of its divisors is an integer number (700621507).

Almost surely, 2^1401243013 is an apocalyptic number.

It is an amenable number.

1401243013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401243013 is an equidigital number, since it uses as much as digits as its factorization.

1401243013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1401243013 is about 37433.1806423125. The cubic root of 1401243013 is about 1119.0199262627.

Adding to 1401243013 its reverse (3103421041), we get a palindrome (4504664054).

The spelling of 1401243013 in words is "one billion, four hundred one million, two hundred forty-three thousand, thirteen".