424145 has 8 divisors (see below), whose sum is σ = 521640. Its totient is φ = 330880.

The previous prime is 424139. The next prime is 424147. The reversal of 424145 is 541424.

It can be written as a sum of positive squares in 4 ways, for example, as 9409 + 414736 = 97^2 + 644^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 424145 - 2⁴ = 424129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (424147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830 + ... + 1239.

It is an arithmetic number, because the mean of its divisors is an integer number (65205).

2⁴²⁴¹⁴⁵ is an apocalyptic number.

It is an amenable number.

424145 is a deficient number, since it is larger than the sum of its proper divisors (97495).

424145 is a wasteful number, since it uses less digits than its factorization.

424145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115.

The product of its digits is 640, while the sum is 20.

The square root of 424145 is about 651.2641553164. The cubic root of 424145 is about 75.1342779674.

Adding to 424145 its reverse (541424), we get a palindrome (965569).

It can be divided in two parts, 4 and 24145, that multiplied together give a triangular number (96580 = T₄₃₉).

The spelling of 424145 in words is "four hundred twenty-four thousand, one hundred forty-five".