1421403345 has 24 divisors (see below), whose sum is σ = 2465139456. Its totient is φ = 757659168.

The previous prime is 1421403329. The next prime is 1421403349. The reversal of 1421403345 is 5433041241.

It is a happy number.

It is not a de Polignac number, because 1421403345 - 2⁴ = 1421403329 is a prime.

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 in 23 ways as a sum of consecutive naturals, for example, 83424 + ... + 99006.

It is an arithmetic number, because the mean of its divisors is an integer number (102714144).

Almost surely, 2^1421403345 is an apocalyptic number.

1421403345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421403345 is a deficient number, since it is larger than the sum of its proper divisors (1043736111).

1421403345 is a wasteful number, since it uses less digits than its factorization.

1421403345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17621 (or 17618 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1421403345 is about 37701.5032193678. The cubic root of 1421403345 is about 1124.3610119451.

Adding to 1421403345 its reverse (5433041241), we get a palindrome (6854444586).

The spelling of 1421403345 in words is "one billion, four hundred twenty-one million, four hundred three thousand, three hundred forty-five".