4124721 has 8 divisors (see below), whose sum is σ = 5581984. Its totient is φ = 2708640.

The previous prime is 4124717. The next prime is 4124737. The reversal of 4124721 is 1274214.

It is a happy number.

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

It is not a de Polignac number, because 4124721 - 2² = 4124717 is a prime.

It is a Duffinian number.

4124721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4124711) 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, 10060 + ... + 10461.

It is an arithmetic number, because the mean of its divisors is an integer number (697748).

Almost surely, 2^4124721 is an apocalyptic number.

It is an amenable number.

4124721 is a deficient number, since it is larger than the sum of its proper divisors (1457263).

4124721 is a wasteful number, since it uses less digits than its factorization.

4124721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20591.

The product of its digits is 448, while the sum is 21.

The square root of 4124721 is about 2030.9409149456. The cubic root of 4124721 is about 160.3731006523.

Adding to 4124721 its reverse (1274214), we get a palindrome (5398935).

The spelling of 4124721 in words is "four million, one hundred twenty-four thousand, seven hundred twenty-one".