4129745 has 16 divisors (see below), whose sum is σ = 5400000. Its totient is φ = 3019968.

The previous prime is 4129729. The next prime is 4129751. The reversal of 4129745 is 5479214.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4129745 - 2⁴ = 4129729 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2006 + ... + 3504.

It is an arithmetic number, because the mean of its divisors is an integer number (337500).

Almost surely, 2^4129745 is an apocalyptic number.

It is an amenable number.

4129745 is a deficient number, since it is larger than the sum of its proper divisors (1270255).

4129745 is a wasteful number, since it uses less digits than its factorization.

4129745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552.

The product of its digits is 10080, while the sum is 32.

The square root of 4129745 is about 2032.1774036732. The cubic root of 4129745 is about 160.4381868770.

The spelling of 4129745 in words is "four million, one hundred twenty-nine thousand, seven hundred forty-five".