4112145 has 12 divisors (see below), whose sum is σ = 7127796. Its totient is φ = 2193120.

The previous prime is 4112137. The next prime is 4112149. The reversal of 4112145 is 5412114.

It can be written as a sum of positive squares in 2 ways, for example, as 2471184 + 1640961 = 1572^2 + 1281^2 .

It is not a de Polignac number, because 4112145 - 2³ = 4112137 is a prime.

It is an Ulam number.

It is a Curzon number.

4112145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4112149) 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, 45646 + ... + 45735.

It is an arithmetic number, because the mean of its divisors is an integer number (593983).

Almost surely, 2^4112145 is an apocalyptic number.

4112145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4112145 is a deficient number, since it is larger than the sum of its proper divisors (3015651).

4112145 is a wasteful number, since it uses less digits than its factorization.

4112145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91392 (or 91389 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 4112145 is about 2027.8424495014. The cubic root of 4112145 is about 160.2099457511.

Adding to 4112145 its reverse (5412114), we get a palindrome (9524259).

It can be divided in two parts, 411 and 2145, that added together give a triangular number (2556 = T₇₁).

The spelling of 4112145 in words is "four million, one hundred twelve thousand, one hundred forty-five".