420942 has 8 divisors (see below), whose sum is σ = 841896. Its totient is φ = 140312.

The previous prime is 420941. The next prime is 420967. The reversal of 420942 is 249024.

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

420942 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35073 + ... + 35084.

It is an arithmetic number, because the mean of its divisors is an integer number (105237).

2⁴²⁰⁹⁴² is an apocalyptic number.

420942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

420942 is a wasteful number, since it uses less digits than its factorization.

420942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70162.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 420942 is about 648.8004315658. The cubic root of 420942 is about 74.9446703028.

Adding to 420942 its reverse (249024), we get a palindrome (669966).

The spelling of 420942 in words is "four hundred twenty thousand, nine hundred forty-two".