4072129 has 8 divisors (see below), whose sum is σ = 4451328. Its totient is φ = 3708480.

The previous prime is 4072097. The next prime is 4072139. The reversal of 4072129 is 9212704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4072129 - 2⁵ = 4072097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4072139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3337 + ... + 4390.

It is an arithmetic number, because the mean of its divisors is an integer number (556416).

Almost surely, 2^4072129 is an apocalyptic number.

It is an amenable number.

4072129 is a deficient number, since it is larger than the sum of its proper divisors (379199).

4072129 is a wasteful number, since it uses less digits than its factorization.

4072129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7775.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 4072129 is about 2017.9516842581. The cubic root of 4072129 is about 159.6885739170.

The spelling of 4072129 in words is "four million, seventy-two thousand, one hundred twenty-nine".