420430142 has 8 divisors (see below), whose sum is σ = 687976632. Its totient is φ = 191104600.

The previous prime is 420430099. The next prime is 420430169. The reversal of 420430142 is 241034024.

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

It is a congruent number.

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, 9555209 + ... + 9555252.

It is an arithmetic number, because the mean of its divisors is an integer number (85997079).

Almost surely, 2^420430142 is an apocalyptic number.

420430142 is a deficient number, since it is larger than the sum of its proper divisors (267546490).

420430142 is a wasteful number, since it uses less digits than its factorization.

420430142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19110474.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 420430142 is about 20504.3932365725. The cubic root of 420430142 is about 749.1428085221.

Adding to 420430142 its reverse (241034024), we get a palindrome (661464166).

The spelling of 420430142 in words is "four hundred twenty million, four hundred thirty thousand, one hundred forty-two".