420023242 has 8 divisors (see below), whose sum is σ = 640713600. Its totient is φ = 206452044.

The previous prime is 420023207. The next prime is 420023273. The reversal of 420023242 is 242320024.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1779642 + ... + 1779877.

It is an arithmetic number, because the mean of its divisors is an integer number (80089200).

Almost surely, 2^420023242 is an apocalyptic number.

420023242 is a deficient number, since it is larger than the sum of its proper divisors (220690358).

420023242 is a wasteful number, since it uses less digits than its factorization.

420023242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559580.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 420023242 is about 20494.4685708120. The cubic root of 420023242 is about 748.9010524648.

Adding to 420023242 its reverse (242320024), we get a palindrome (662343266).

The spelling of 420023242 in words is "four hundred twenty million, twenty-three thousand, two hundred forty-two".