1215245423 has 6 divisors (see below), whose sum is σ = 1413652896. Its totient is φ = 1041638892.

The previous prime is 1215245417. The next prime is 1215245431. The reversal of 1215245423 is 3245425121.

It is a de Polignac number, because none of the positive numbers 2^k-1215245423 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 (1215245483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12400415 + ... + 12400512.

It is an arithmetic number, because the mean of its divisors is an integer number (235608816).

Almost surely, 2^1215245423 is an apocalyptic number.

1215245423 is a deficient number, since it is larger than the sum of its proper divisors (198407473).

1215245423 is an equidigital number, since it uses as much as digits as its factorization.

1215245423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24800941 (or 24800934 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 1215245423 is about 34860.3703795585. The cubic root of 1215245423 is about 1067.1398337055.

It can be divided in two parts, 12152 and 45423, that added together give a palindrome (57575).

The spelling of 1215245423 in words is "one billion, two hundred fifteen million, two hundred forty-five thousand, four hundred twenty-three".