1244422402 has 8 divisors (see below), whose sum is σ = 1866890700. Its totient is φ = 622125504.

The previous prime is 1244422397. The next prime is 1244422427. The reversal of 1244422402 is 2042244421.

It can be written as a sum of positive squares in 2 ways, for example, as 1206242361 + 38180041 = 34731^2 + 6179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1244422402² = 3097174229198899208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22827 + ... + 54862.

Almost surely, 2^1244422402 is an apocalyptic number.

1244422402 is a deficient number, since it is larger than the sum of its proper divisors (622468298).

1244422402 is an equidigital number, since it uses as much as digits as its factorization.

1244422402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85700.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 1244422402 is about 35276.3717238607. The cubic root of 1244422402 is about 1075.6127466138.

Adding to 1244422402 its reverse (2042244421), we get a palindrome (3286666823).

The spelling of 1244422402 in words is "one billion, two hundred forty-four million, four hundred twenty-two thousand, four hundred two".