4128501 has 24 divisors (see below), whose sum is σ = 6324480. Its totient is φ = 2386176.

The previous prime is 4128493. The next prime is 4128511. The reversal of 4128501 is 1058214.

4128501 = T₂₀₅ + T₂₀₆ + ... + T₃₂₁.

4128501 is a nontrivial binomial coefficient, being equal to C(2874, 2).

It is not a de Polignac number, because 4128501 - 2³ = 4128493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8380 + ... + 8858.

It is an arithmetic number, because the mean of its divisors is an integer number (263520).

Almost surely, 2^4128501 is an apocalyptic number.

4128501 is the 2873-rd triangular number and also the 1437-th hexagonal number.

It is an amenable number.

4128501 is a deficient number, since it is larger than the sum of its proper divisors (2195979).

4128501 is a wasteful number, since it uses less digits than its factorization.

4128501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 4128501 is about 2031.8713049797. The cubic root of 4128501 is about 160.4220757007.

The spelling of 4128501 in words is "four million, one hundred twenty-eight thousand, five hundred one".