1244030402 has 4 divisors (see below), whose sum is σ = 1866045606. Its totient is φ = 622015200.

The previous prime is 1244030327. The next prime is 1244030413. The reversal of 1244030402 is 2040304421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2040304421 = 137 ⋅14892733.

It can be written as a sum of positive squares in only one way, i.e., 1151312761 + 92717641 = 33931^2 + 9629^2 .

It is a super-2 number, since 2×1244030402² = 3095223282200563208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311007599 + ... + 311007602.

Almost surely, 2^1244030402 is an apocalyptic number.

1244030402 is a deficient number, since it is larger than the sum of its proper divisors (622015204).

1244030402 is an equidigital number, since it uses as much as digits as its factorization.

1244030402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622015203.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1244030402 is about 35270.8151592786. The cubic root of 1244030402 is about 1075.4997934137.

Adding to 1244030402 its reverse (2040304421), we get a palindrome (3284334823).

The spelling of 1244030402 in words is "one billion, two hundred forty-four million, thirty thousand, four hundred two".