420523023 has 8 divisors (see below), whose sum is σ = 560884528. Its totient is φ = 280255104.

The previous prime is 420522983. The next prime is 420523043. The reversal of 420523023 is 320325024.

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

It is not a de Polignac number, because 420523023 - 2¹² = 420518927 is a prime.

It is a super-2 number, since 2×420523023² = 353679225746117058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420523043) 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, 12136 + ... + 31437.

It is an arithmetic number, because the mean of its divisors is an integer number (70110566).

Almost surely, 2^420523023 is an apocalyptic number.

420523023 is a deficient number, since it is larger than the sum of its proper divisors (140361505).

420523023 is a wasteful number, since it uses less digits than its factorization.

420523023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46793.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 420523023 is about 20506.6580163614. The cubic root of 420523023 is about 749.1979710830.

Adding to 420523023 its reverse (320325024), we get a palindrome (740848047).

The spelling of 420523023 in words is "four hundred twenty million, five hundred twenty-three thousand, twenty-three".