1243244402 has 16 divisors (see below), whose sum is σ = 1897838592. Its totient is φ = 610727040.

The previous prime is 1243244399. The next prime is 1243244407. The reversal of 1243244402 is 2044423421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1243244407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2402 + ... + 49922.

It is an arithmetic number, because the mean of its divisors is an integer number (118614912).

Almost surely, 2^1243244402 is an apocalyptic number.

1243244402 is a deficient number, since it is larger than the sum of its proper divisors (654594190).

1243244402 is a wasteful number, since it uses less digits than its factorization.

1243244402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47753.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1243244402 is about 35259.6710421410. The cubic root of 1243244402 is about 1075.2732392146.

Adding to 1243244402 its reverse (2044423421), we get a palindrome (3287667823).

The spelling of 1243244402 in words is "one billion, two hundred forty-three million, two hundred forty-four thousand, four hundred two".