1421403344 has 10 divisors (see below), whose sum is σ = 2753969010. Its totient is φ = 710701664.

The previous prime is 1421403329. The next prime is 1421403349. The reversal of 1421403344 is 4433041241.

It can be written as a sum of positive squares in only one way, i.e., 772172944 + 649230400 = 27788^2 + 25480^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421403349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44418839 + ... + 44418870.

It is an arithmetic number, because the mean of its divisors is an integer number (275396901).

Almost surely, 2^1421403344 is an apocalyptic number.

It is an amenable number.

1421403344 is a deficient number, since it is larger than the sum of its proper divisors (1332565666).

1421403344 is an equidigital number, since it uses as much as digits as its factorization.

1421403344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88837717 (or 88837711 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1421403344 is about 37701.5032061057. The cubic root of 1421403344 is about 1124.3610116814.

Adding to 1421403344 its reverse (4433041241), we get a palindrome (5854444585).

The spelling of 1421403344 in words is "one billion, four hundred twenty-one million, four hundred three thousand, three hundred forty-four".