425124 has 54 divisors (see below), whose sum is σ = 1255254. Its totient is φ = 120960.

The previous prime is 425123. The next prime is 425147. The reversal of 425124 is 421524.

425124 = T₃₂₂ + T₃₂₃ + ... + T₃₂₉.

It can be written as a sum of positive squares in only one way, i.e., 396900 + 28224 = 630^2 + 168^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 425097 and 425106.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425124.

It is not an unprimeable number, because it can be changed into a prime (425123) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1644 + ... + 1884.

2⁴²⁵¹²⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627627).

425124 is an abundant number, since it is smaller than the sum of its proper divisors (830130).

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

425124 is a wasteful number, since it uses less digits than its factorization.

425124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 253 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 425124 is about 652.0153372429. The cubic root of 425124 is about 75.1920411828.

Adding to 425124 its reverse (421524), we get a palindrome (846648).

Subtracting from 425124 its reverse (421524), we obtain a square (3600 = 60²).

The spelling of 425124 in words is "four hundred twenty-five thousand, one hundred twenty-four".