4125640 has 16 divisors (see below), whose sum is σ = 9282780. Its totient is φ = 1650240.

The previous prime is 4125637. The next prime is 4125647. The reversal of 4125640 is 465214.

It can be written as a sum of positive squares in 2 ways, for example, as 3786916 + 338724 = 1946^2 + 582^2 .

It is not an unprimeable number, because it can be changed into a prime (4125647) 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, 51531 + ... + 51610.

Almost surely, 2^4125640 is an apocalyptic number.

4125640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4125640 is an abundant number, since it is smaller than the sum of its proper divisors (5157140).

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

4125640 is a wasteful number, since it uses less digits than its factorization.

4125640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103152 (or 103148 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4125640 is about 2031.1671521566. The cubic root of 4125640 is about 160.3850103011.

The spelling of 4125640 in words is "four million, one hundred twenty-five thousand, six hundred forty".