4215123 has 12 divisors (see below), whose sum is σ = 6642168. Its totient is φ = 2554560.

The previous prime is 4215103. The next prime is 4215157. The reversal of 4215123 is 3215124.

It is not a de Polignac number, because 4215123 - 2⁵ = 4215091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4215096 and 4215105.

It is not an unprimeable number, because it can be changed into a prime (4215103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21190 + ... + 21387.

It is an arithmetic number, because the mean of its divisors is an integer number (553514).

Almost surely, 2^4215123 is an apocalyptic number.

4215123 is a deficient number, since it is larger than the sum of its proper divisors (2427045).

4215123 is a wasteful number, since it uses less digits than its factorization.

4215123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42594 (or 42591 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 4215123 is about 2053.0764720292. The cubic root of 4215123 is about 161.5362824928.

Subtracting from 4215123 its reverse (3215124), we obtain a palindrome (999999).

The spelling of 4215123 in words is "four million, two hundred fifteen thousand, one hundred twenty-three".