1243115402 has 16 divisors (see below), whose sum is σ = 1911047040. Its totient is φ = 606289632.

The previous prime is 1243115399. The next prime is 1243115411. The reversal of 1243115402 is 2045113421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34283 + ... + 60510.

It is an arithmetic number, because the mean of its divisors is an integer number (119440440).

Almost surely, 2^1243115402 is an apocalyptic number.

1243115402 is a deficient number, since it is larger than the sum of its proper divisors (667931638).

1243115402 is an equidigital number, since it uses as much as digits as its factorization.

1243115402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94957.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1243115402 is about 35257.8417093276. The cubic root of 1243115402 is about 1075.2360475341.

Adding to 1243115402 its reverse (2045113421), we get a palindrome (3288228823).

The spelling of 1243115402 in words is "one billion, two hundred forty-three million, one hundred fifteen thousand, four hundred two".