4202523 has 30 divisors (see below), whose sum is σ = 6820044. Its totient is φ = 2577744.

The previous prime is 4202521. The next prime is 4202567. The reversal of 4202523 is 3252024.

It is not a de Polignac number, because 4202523 - 2¹ = 4202521 is a prime.

It is a super-2 number, since 2×4202523² = 35322399131058, which contains 22 as substring.

4202523 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4202496 and 4202505.

It is not an unprimeable number, because it can be changed into a prime (4202521) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 13536 + ... + 13842.

Almost surely, 2^4202523 is an apocalyptic number.

4202523 is a deficient number, since it is larger than the sum of its proper divisors (2617521).

4202523 is a wasteful number, since it uses less digits than its factorization.

4202523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4202523 is about 2050.0056097484. The cubic root of 4202523 is about 161.3751651234.

Adding to 4202523 its reverse (3252024), we get a palindrome (7454547).

The spelling of 4202523 in words is "four million, two hundred two thousand, five hundred twenty-three".