4155123 has 32 divisors (see below), whose sum is σ = 6829056. Its totient is φ = 2193408.

The previous prime is 4155121. The next prime is 4155161. The reversal of 4155123 is 3215514.

4155123 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 4155123 - 2¹ = 4155121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 4155123.

It is not an unprimeable number, because it can be changed into a prime (4155121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36715 + ... + 36827.

It is an arithmetic number, because the mean of its divisors is an integer number (213408).

Almost surely, 2^4155123 is an apocalyptic number.

4155123 is a deficient number, since it is larger than the sum of its proper divisors (2673933).

4155123 is a wasteful number, since it uses less digits than its factorization.

4155123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243.

The product of its digits is 600, while the sum is 21.

The square root of 4155123 is about 2038.4118818335. The cubic root of 4155123 is about 160.7661561530.

It can be divided in two parts, 4155 and 123, that added together give a triangular number (4278 = T₉₂).

The spelling of 4155123 in words is "four million, one hundred fifty-five thousand, one hundred twenty-three".