423860 has 12 divisors (see below), whose sum is σ = 890148. Its totient is φ = 169536.

The previous prime is 423859. The next prime is 423869. The reversal of 423860 is 68324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68644 + 355216 = 262^2 + 596^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423869) 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, 10577 + ... + 10616.

It is an arithmetic number, because the mean of its divisors is an integer number (74179).

2⁴²³⁸⁶⁰ is an apocalyptic number.

It is an amenable number.

423860 is an abundant number, since it is smaller than the sum of its proper divisors (466288).

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

423860 is a wasteful number, since it uses less digits than its factorization.

423860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21202 (or 21200 counting only the distinct ones).

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

The square root of 423860 is about 651.0453133231. The cubic root of 423860 is about 75.1174456206.

The spelling of 423860 in words is "four hundred twenty-three thousand, eight hundred sixty".