420242352 has 20 divisors (see below), whose sum is σ = 1085626200. Its totient is φ = 140080768.

The previous prime is 420242341. The next prime is 420242357. The reversal of 420242352 is 253242024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (420242357) 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, 4377477 + ... + 4377572.

It is an arithmetic number, because the mean of its divisors is an integer number (54281310).

Almost surely, 2^420242352 is an apocalyptic number.

It is an amenable number.

420242352 is an abundant number, since it is smaller than the sum of its proper divisors (665383848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420242352 is a wasteful number, since it uses less digits than its factorization.

420242352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8755060 (or 8755054 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 420242352 is about 20499.8134625659. The cubic root of 420242352 is about 749.0312541362.

Adding to 420242352 its reverse (253242024), we get a palindrome (673484376).

The spelling of 420242352 in words is "four hundred twenty million, two hundred forty-two thousand, three hundred fifty-two".