1243132415 has 32 divisors (see below), whose sum is σ = 1775554560. Its totient is φ = 817488000.

The previous prime is 1243132393. The next prime is 1243132421. The reversal of 1243132415 is 5142313421.

It is a happy number.

It is not a de Polignac number, because 1243132415 - 2⁶ = 1243132351 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 149210 + ... + 157320.

It is an arithmetic number, because the mean of its divisors is an integer number (55486080).

Almost surely, 2^1243132415 is an apocalyptic number.

1243132415 is a deficient number, since it is larger than the sum of its proper divisors (532422145).

1243132415 is a wasteful number, since it uses less digits than its factorization.

1243132415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303.

The product of its digits is 2880, while the sum is 26.

The square root of 1243132415 is about 35258.0829739792. The cubic root of 1243132415 is about 1075.2409526586.

Adding to 1243132415 its reverse (5142313421), we get a palindrome (6385445836).

The spelling of 1243132415 in words is "one billion, two hundred forty-three million, one hundred thirty-two thousand, four hundred fifteen".