420970 has 32 divisors (see below), whose sum is σ = 855360. Its totient is φ = 147840.

The previous prime is 420967. The next prime is 420977. The reversal of 420970 is 79024.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (420977) 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, 4686 + ... + 4774.

It is an arithmetic number, because the mean of its divisors is an integer number (26730).

2⁴²⁰⁹⁷⁰ is an apocalyptic number.

420970 is an abundant number, since it is smaller than the sum of its proper divisors (434390).

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

420970 is a wasteful number, since it uses less digits than its factorization.

420970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 420970 is about 648.8220094910. The cubic root of 420970 is about 74.9463319761.

Adding to 420970 its reverse (79024), we get a palindrome (499994).

The spelling of 420970 in words is "four hundred twenty thousand, nine hundred seventy".