420310142 has 64 divisors (see below), whose sum is σ = 812851200. Its totient is φ = 162062208.

The previous prime is 420310141. The next prime is 420310151. The reversal of 420310142 is 241013024.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 420310142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420310141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267443 + ... + 269009.

It is an arithmetic number, because the mean of its divisors is an integer number (12700800).

Almost surely, 2^420310142 is an apocalyptic number.

420310142 is a deficient number, since it is larger than the sum of its proper divisors (392541058).

420310142 is a wasteful number, since it uses less digits than its factorization.

420310142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 1616 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 420310142 is about 20501.4668255713. The cubic root of 420310142 is about 749.0715278009.

Adding to 420310142 its reverse (241013024), we get a palindrome (661323166).

The spelling of 420310142 in words is "four hundred twenty million, three hundred ten thousand, one hundred forty-two".