420727623 has 4 divisors (see below), whose sum is σ = 560970168. Its totient is φ = 280485080.

The previous prime is 420727603. The next prime is 420727627. The reversal of 420727623 is 326727024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420727623 - 2¹⁰ = 420726599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420727627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70121268 + ... + 70121273.

It is an arithmetic number, because the mean of its divisors is an integer number (140242542).

Almost surely, 2^420727623 is an apocalyptic number.

420727623 is a deficient number, since it is larger than the sum of its proper divisors (140242545).

420727623 is a wasteful number, since it uses less digits than its factorization.

420727623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140242544.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 420727623 is about 20511.6460334123. The cubic root of 420727623 is about 749.3194555547.

The spelling of 420727623 in words is "four hundred twenty million, seven hundred twenty-seven thousand, six hundred twenty-three".