4123145 has 16 divisors (see below), whose sum is σ = 5370960. Its totient is φ = 3020544.

The previous prime is 4123127. The next prime is 4123153. The reversal of 4123145 is 5413214.

It can be written as a sum of positive squares in 8 ways, for example, as 139129 + 3984016 = 373^2 + 1996^2 .

It is a cyclic number.

It is not a de Polignac number, because 4123145 - 2¹⁰ = 4122121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14747 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (335685).

Almost surely, 2^4123145 is an apocalyptic number.

It is an amenable number.

4123145 is a deficient number, since it is larger than the sum of its proper divisors (1247815).

4123145 is a wasteful number, since it uses less digits than its factorization.

4123145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its digits is 480, while the sum is 20.

The square root of 4123145 is about 2030.5528803752. The cubic root of 4123145 is about 160.3526725875.

Adding to 4123145 its reverse (5413214), we get a palindrome (9536359).

The spelling of 4123145 in words is "four million, one hundred twenty-three thousand, one hundred forty-five".