420045653 has 4 divisors (see below), whose sum is σ = 425106528. Its totient is φ = 414984780.

The previous prime is 420045649. The next prime is 420045667. The reversal of 420045653 is 356540024.

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 420045653 - 2² = 420045649 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 (420045953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2530313 + ... + 2530478.

It is an arithmetic number, because the mean of its divisors is an integer number (106276632).

Almost surely, 2^420045653 is an apocalyptic number.

It is an amenable number.

420045653 is a deficient number, since it is larger than the sum of its proper divisors (5060875).

420045653 is an equidigital number, since it uses as much as digits as its factorization.

420045653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060874.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 420045653 is about 20495.0153208042. The cubic root of 420045653 is about 748.9143718254.

Adding to 420045653 its reverse (356540024), we get a palindrome (776585677).

The spelling of 420045653 in words is "four hundred twenty million, forty-five thousand, six hundred fifty-three".