1244254402 has 16 divisors (see below), whose sum is σ = 1893327480. Its totient is φ = 613204992.

The previous prime is 1244254399. The next prime is 1244254421. The reversal of 1244254402 is 2044524421.

It can be written as a sum of positive squares in 4 ways, for example, as 808321761 + 435932641 = 28431^2 + 20879^2 .

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, 27288 + ... + 56860.

Almost surely, 2^1244254402 is an apocalyptic number.

1244254402 is a deficient number, since it is larger than the sum of its proper divisors (649073078).

1244254402 is a wasteful number, since it uses less digits than its factorization.

1244254402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29877.

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 1244254402 is about 35273.9904462197. The cubic root of 1244254402 is about 1075.5643410044.

Adding to 1244254402 its reverse (2044524421), we get a palindrome (3288778823).

The spelling of 1244254402 in words is "one billion, two hundred forty-four million, two hundred fifty-four thousand, four hundred two".