424251 has 16 divisors (see below), whose sum is σ = 662400. Its totient is φ = 267624.

The previous prime is 424247. The next prime is 424261. The reversal of 424251 is 152424.

It is not a de Polignac number, because 424251 - 2² = 424247 is a prime.

It is a super-2 number, since 2×424251² = 359977822002, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 424251.

It is not an unprimeable number, because it can be changed into a prime (424231) 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, 100 + ... + 926.

It is an arithmetic number, because the mean of its divisors is an integer number (41400).

2⁴²⁴²⁵¹ is an apocalyptic number.

424251 is a deficient number, since it is larger than the sum of its proper divisors (238149).

424251 is a wasteful number, since it uses less digits than its factorization.

424251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 849 counting only the distinct ones).

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

The square root of 424251 is about 651.3455304214. The cubic root of 424251 is about 75.1405364954.

Adding to 424251 its reverse (152424), we get a palindrome (576675).

The spelling of 424251 in words is "four hundred twenty-four thousand, two hundred fifty-one".