4120905 has 16 divisors (see below), whose sum is σ = 6747840. Its totient is φ = 2146368.

The previous prime is 4120903. The next prime is 4120931. The reversal of 4120905 is 5090214.

It is not a de Polignac number, because 4120905 - 2¹ = 4120903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4120903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2550 + ... + 3839.

It is an arithmetic number, because the mean of its divisors is an integer number (421740).

Almost surely, 2^4120905 is an apocalyptic number.

It is an amenable number.

4120905 is a deficient number, since it is larger than the sum of its proper divisors (2626935).

4120905 is a wasteful number, since it uses less digits than its factorization.

4120905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 4120905 is about 2030.0012315267. The cubic root of 4120905 is about 160.3236288153.

The spelling of 4120905 in words is "four million, one hundred twenty thousand, nine hundred five".