420420042 has 48 divisors (see below), whose sum is σ = 1056599232. Its totient is φ = 118324800.

The previous prime is 420420041. The next prime is 420420043. The reversal of 420420042 is 240024024.

420420042 is a `hidden beast` number, since 420 + 4 + 200 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (420420041) and next prime (420420043).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 420419997 and 420420024.

It is not an unprimeable number, because it can be changed into a prime (420420041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16459 + ... + 33342.

It is an arithmetic number, because the mean of its divisors is an integer number (22012484).

Almost surely, 2^420420042 is an apocalyptic number.

420420042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

420420042 is an abundant number, since it is smaller than the sum of its proper divisors (636179190).

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

420420042 is a wasteful number, since it uses less digits than its factorization.

420420042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49883 (or 49880 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 420420042 is about 20504.1469464106. The cubic root of 420420042 is about 749.1368095842.

Adding to 420420042 its reverse (240024024), we get a palindrome (660444066).

The spelling of 420420042 in words is "four hundred twenty million, four hundred twenty thousand, forty-two".