420944 has 10 divisors (see below), whose sum is σ = 815610. Its totient is φ = 210464.

The previous prime is 420941. The next prime is 420967. The reversal of 420944 is 449024.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 270400 + 150544 = 520^2 + 388^2 .

It is a super-2 number, since 2×420944² = 354387702272, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 13139 + ... + 13170.

It is an arithmetic number, because the mean of its divisors is an integer number (81561).

2⁴²⁰⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

420944 is a deficient number, since it is larger than the sum of its proper divisors (394666).

420944 is a wasteful number, since it uses less digits than its factorization.

420944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26317 (or 26311 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 420944 is about 648.8019728700. The cubic root of 420944 is about 74.9447889962.

Adding to 420944 its reverse (449024), we get a palindrome (869968).

The spelling of 420944 in words is "four hundred twenty thousand, nine hundred forty-four".