4031121 has 8 divisors (see below), whose sum is σ = 5500000. Its totient is φ = 2624832.

The previous prime is 4031119. The next prime is 4031129. The reversal of 4031121 is 1211304.

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 4031121 - 2¹ = 4031119 is a prime.

It is a Duffinian number.

4031121 is a lucky number.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 4031097 and 4031106.

It is not an unprimeable number, because it can be changed into a prime (4031129) 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, 15496 + ... + 15753.

It is an arithmetic number, because the mean of its divisors is an integer number (687500).

Almost surely, 2^4031121 is an apocalyptic number.

It is an amenable number.

4031121 is a deficient number, since it is larger than the sum of its proper divisors (1468879).

4031121 is a wasteful number, since it uses less digits than its factorization.

4031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31295.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 4031121 is about 2007.7651755123. The cubic root of 4031121 is about 159.1507213665.

Adding to 4031121 its reverse (1211304), we get a palindrome (5242425).

The spelling of 4031121 in words is "four million, thirty-one thousand, one hundred twenty-one".