4150121 has 4 divisors (see below), whose sum is σ = 4155012. Its totient is φ = 4145232.

The previous prime is 4150109. The next prime is 4150127. The reversal of 4150121 is 1210514.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1210514 = 2 ⋅605257.

It can be written as a sum of positive squares in 2 ways, for example, as 2062096 + 2088025 = 1436^2 + 1445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4150121 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4150096 and 4150105.

It is not an unprimeable number, because it can be changed into a prime (4150127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806 + ... + 2991.

It is an arithmetic number, because the mean of its divisors is an integer number (1038753).

Almost surely, 2^4150121 is an apocalyptic number.

It is an amenable number.

4150121 is a deficient number, since it is larger than the sum of its proper divisors (4891).

4150121 is a wasteful number, since it uses less digits than its factorization.

4150121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 4150121 is about 2037.1845768118. The cubic root of 4150121 is about 160.7016193380.

Adding to 4150121 its reverse (1210514), we get a palindrome (5360635).

The spelling of 4150121 in words is "four million, one hundred fifty thousand, one hundred twenty-one".