4250121 has 12 divisors (see below), whose sum is σ = 5764752. Its totient is φ = 2785224.

The previous prime is 4250111. The next prime is 4250149. The reversal of 4250121 is 1210524.

It is not a de Polignac number, because 4250121 - 2¹⁰ = 4249097 is a prime.

4250121 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4250121.

It is not an unprimeable number, because it can be changed into a prime (4250111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18610 + ... + 18836.

It is an arithmetic number, because the mean of its divisors is an integer number (480396).

Almost surely, 2^4250121 is an apocalyptic number.

It is an amenable number.

4250121 is a deficient number, since it is larger than the sum of its proper divisors (1514631).

4250121 is an equidigital number, since it uses as much as digits as its factorization.

4250121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 4250121 is about 2061.5821594106. The cubic root of 4250121 is about 161.9821272768.

Adding to 4250121 its reverse (1210524), we get a palindrome (5460645).

It can be divided in two parts, 4250 and 121, that added together give a triangular number (4371 = T₉₃).

The spelling of 4250121 in words is "four million, two hundred fifty thousand, one hundred twenty-one".