420442352 has 20 divisors (see below), whose sum is σ = 888662616. Its totient is φ = 191110080.

The previous prime is 420442349. The next prime is 420442357. The reversal of 420442352 is 253244024.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420442357) 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, 1194263 + ... + 1194614.

Almost surely, 2^420442352 is an apocalyptic number.

It is an amenable number.

420442352 is an abundant number, since it is smaller than the sum of its proper divisors (468220264).

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

420442352 is a wasteful number, since it uses less digits than its factorization.

420442352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388896 (or 2388890 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 420442352 is about 20504.6909754817. The cubic root of 420442352 is about 749.1500605752.

Adding to 420442352 its reverse (253244024), we get a palindrome (673686376).

The spelling of 420442352 in words is "four hundred twenty million, four hundred forty-two thousand, three hundred fifty-two".