420220042 has 32 divisors (see below), whose sum is σ = 732265920. Its totient is φ = 178740480.

The previous prime is 420220001. The next prime is 420220043. The reversal of 420220042 is 240022024.

It is a junction number, because it is equal to n+sod(n) for n = 420219998 and 420220025.

It is not an unprimeable number, because it can be changed into a prime (420220043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63808 + ... + 70084.

It is an arithmetic number, because the mean of its divisors is an integer number (22883310).

Almost surely, 2^420220042 is an apocalyptic number.

420220042 is a deficient number, since it is larger than the sum of its proper divisors (312045878).

420220042 is a wasteful number, since it uses less digits than its factorization.

420220042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 420220042 is about 20499.2693040508. The cubic root of 420220042 is about 749.0179989412.

Adding to 420220042 its reverse (240022024), we get a palindrome (660242066).

The spelling of 420220042 in words is "four hundred twenty million, two hundred twenty thousand, forty-two".