1421043453 has 8 divisors (see below), whose sum is σ = 2105249600. Its totient is φ = 947362284.

The previous prime is 1421043443. The next prime is 1421043469. The reversal of 1421043453 is 3543401241.

It is a happy number.

1421043453 is a `hidden beast` number, since 14 + 210 + 434 + 5 + 3 = 666.

It is not a de Polignac number, because 1421043453 - 2⁹ = 1421042941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 52631239 = 1421043453 / (1 + 4 + 2 + 1 + 0 + 4 + 3 + 4 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421043443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26315593 + ... + 26315646.

It is an arithmetic number, because the mean of its divisors is an integer number (263156200).

Almost surely, 2^1421043453 is an apocalyptic number.

It is an amenable number.

1421043453 is a deficient number, since it is larger than the sum of its proper divisors (684206147).

1421043453 is an equidigital number, since it uses as much as digits as its factorization.

1421043453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52631248 (or 52631242 counting only the distinct ones).

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

The square root of 1421043453 is about 37696.7300040733. The cubic root of 1421043453 is about 1124.2661097976.

Adding to 1421043453 its reverse (3543401241), we get a palindrome (4964444694).

The spelling of 1421043453 in words is "one billion, four hundred twenty-one million, forty-three thousand, four hundred fifty-three".