4123540 has 12 divisors (see below), whose sum is σ = 8659476. Its totient is φ = 1649408.

The previous prime is 4123531. The next prime is 4123541. The reversal of 4123540 is 453214.

It can be written as a sum of positive squares in 2 ways, for example, as 2322576 + 1800964 = 1524^2 + 1342^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103069 + ... + 103108.

It is an arithmetic number, because the mean of its divisors is an integer number (721623).

Almost surely, 2^4123540 is an apocalyptic number.

It is an amenable number.

4123540 is an abundant number, since it is smaller than the sum of its proper divisors (4535936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4123540 is a wasteful number, since it uses less digits than its factorization.

4123540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206186 (or 206184 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4123540 is about 2030.6501421958. The cubic root of 4123540 is about 160.3577930544.

Adding to 4123540 its reverse (453214), we get a palindrome (4576754).

The spelling of 4123540 in words is "four million, one hundred twenty-three thousand, five hundred forty".