1421003944 has 32 divisors (see below), whose sum is σ = 2830768200. Its totient is φ = 667457280.

The previous prime is 1421003923. The next prime is 1421003951. The reversal of 1421003944 is 4493001241.

It can be written as a sum of positive squares in 4 ways, for example, as 1182672100 + 238331844 = 34390^2 + 15438^2 .

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, 74187 + ... + 91354.

Almost surely, 2^1421003944 is an apocalyptic number.

It is an amenable number.

1421003944 is a deficient number, since it is larger than the sum of its proper divisors (1409764256).

1421003944 is a wasteful number, since it uses less digits than its factorization.

1421003944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165613 (or 165609 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1421003944 is about 37696.2059629348. The cubic root of 1421003944 is about 1124.2556904490.

The spelling of 1421003944 in words is "one billion, four hundred twenty-one million, three thousand, nine hundred forty-four".