4145040 has 160 divisors (see below), whose sum is σ = 15177600. Its totient is φ = 1036800.

The previous prime is 4145033. The next prime is 4145047. The reversal of 4145040 is 405414.

It is an interprime number because it is at equal distance from previous prime (4145033) and next prime (4145047).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (4145047) 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, 40990 + ... + 41090.

It is an arithmetic number, because the mean of its divisors is an integer number (94860).

Almost surely, 2^4145040 is an apocalyptic number.

4145040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4145040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7588800).

4145040 is an abundant number, since it is smaller than the sum of its proper divisors (11032560).

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

4145040 is a wasteful number, since it uses less digits than its factorization.

4145040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4145040 is about 2035.9371306600. The cubic root of 4145040 is about 160.6360101362.

The spelling of 4145040 in words is "four million, one hundred forty-five thousand, forty".