4128940 has 12 divisors (see below), whose sum is σ = 8670816. Its totient is φ = 1651568.

The previous prime is 4128931. The next prime is 4128959. The reversal of 4128940 is 498214.

It is a junction number, because it is equal to n+sod(n) for n = 4128899 and 4128908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103204 + ... + 103243.

It is an arithmetic number, because the mean of its divisors is an integer number (722568).

Almost surely, 2^4128940 is an apocalyptic number.

It is an amenable number.

4128940 is an abundant number, since it is smaller than the sum of its proper divisors (4541876).

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

4128940 is a wasteful number, since it uses less digits than its factorization.

4128940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206456 (or 206454 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 4128940 is about 2031.9793306035. The cubic root of 4128940 is about 160.4277616059.

The spelling of 4128940 in words is "four million, one hundred twenty-eight thousand, nine hundred forty".