420523773 has 8 divisors (see below), whose sum is σ = 578785536. Its totient is φ = 271305600.

The previous prime is 420523769. The next prime is 420523777. The reversal of 420523773 is 377325024.

It is an interprime number because it is at equal distance from previous prime (420523769) and next prime (420523777).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420523773 - 2² = 420523769 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420523777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2260788 + ... + 2260973.

It is an arithmetic number, because the mean of its divisors is an integer number (72348192).

Almost surely, 2^420523773 is an apocalyptic number.

It is an amenable number.

420523773 is a deficient number, since it is larger than the sum of its proper divisors (158261763).

420523773 is a wasteful number, since it uses less digits than its factorization.

420523773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521795.

The product of its (nonzero) digits is 35280, while the sum is 33.

The square root of 420523773 is about 20506.6763030970. The cubic root of 420523773 is about 749.1984164792.

Adding to 420523773 its reverse (377325024), we get a palindrome (797848797).

The spelling of 420523773 in words is "four hundred twenty million, five hundred twenty-three thousand, seven hundred seventy-three".