1244047402 has 16 divisors (see below), whose sum is σ = 2010342600. Its totient is φ = 573967872.

The previous prime is 1244047373. The next prime is 1244047417. The reversal of 1244047402 is 2047404421.

It can be written as a sum of positive squares in 4 ways, for example, as 406465921 + 837581481 = 20161^2 + 28941^2 .

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, 82738 + ... + 96610.

Almost surely, 2^1244047402 is an apocalyptic number.

1244047402 is a deficient number, since it is larger than the sum of its proper divisors (766295198).

1244047402 is a wasteful number, since it uses less digits than its factorization.

1244047402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17337.

The product of its (nonzero) digits is 7168, while the sum is 28.

The square root of 1244047402 is about 35271.0561509008. The cubic root of 1244047402 is about 1075.5046923865.

The spelling of 1244047402 in words is "one billion, two hundred forty-four million, forty-seven thousand, four hundred two".