4058721 has 8 divisors (see below), whose sum is σ = 6012960. Its totient is φ = 2705796.

The previous prime is 4058701. The next prime is 4058731. The reversal of 4058721 is 1278504.

It is not a de Polignac number, because 4058721 - 2⁹ = 4058209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 150323 = 4058721 / (4 + 0 + 5 + 8 + 7 + 2 + 1).

4058721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4058701) 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, 75135 + ... + 75188.

It is an arithmetic number, because the mean of its divisors is an integer number (751620).

Almost surely, 2^4058721 is an apocalyptic number.

It is an amenable number.

4058721 is a deficient number, since it is larger than the sum of its proper divisors (1954239).

4058721 is a wasteful number, since it uses less digits than its factorization.

4058721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150332 (or 150326 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 4058721 is about 2014.6267644405. The cubic root of 4058721 is about 159.5131162584.

The spelling of 4058721 in words is "four million, fifty-eight thousand, seven hundred twenty-one".