420437453 has 4 divisors (see below), whose sum is σ = 442565760. Its totient is φ = 398309148.

The previous prime is 420437431. The next prime is 420437461. The reversal of 420437453 is 354734024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420437453 - 2¹² = 420433357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420437653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11064125 + ... + 11064162.

It is an arithmetic number, because the mean of its divisors is an integer number (110641440).

Almost surely, 2^420437453 is an apocalyptic number.

It is an amenable number.

420437453 is a deficient number, since it is larger than the sum of its proper divisors (22128307).

420437453 is a wasteful number, since it uses less digits than its factorization.

420437453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22128306.

The product of its (nonzero) digits is 40320, while the sum is 32.

The square root of 420437453 is about 20504.5715146647. The cubic root of 420437453 is about 749.1471508617.

The spelling of 420437453 in words is "four hundred twenty million, four hundred thirty-seven thousand, four hundred fifty-three".