420523143 has 16 divisors (see below), whose sum is σ = 598298880. Its totient is φ = 261952704.

The previous prime is 420523123. The next prime is 420523151. The reversal of 420523143 is 341325024.

It is not a de Polignac number, because 420523143 - 2⁶ = 420523079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420523123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46371 + ... + 54692.

It is an arithmetic number, because the mean of its divisors is an integer number (37393680).

Almost surely, 2^420523143 is an apocalyptic number.

420523143 is a deficient number, since it is larger than the sum of its proper divisors (177775737).

420523143 is a wasteful number, since it uses less digits than its factorization.

420523143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101158.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 420523143 is about 20506.6609422402. The cubic root of 420523143 is about 749.1980423464.

Adding to 420523143 its reverse (341325024), we get a palindrome (761848167).

The spelling of 420523143 in words is "four hundred twenty million, five hundred twenty-three thousand, one hundred forty-three".