7850121 has 4 divisors (see below), whose sum is σ = 10466832. Its totient is φ = 5233412.

The previous prime is 7850119. The next prime is 7850131. The reversal of 7850121 is 1210587.

7850121 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7850121 - 2¹ = 7850119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 7850091 and 7850100.

It is not an unprimeable number, because it can be changed into a prime (7850111) 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, 1308351 + ... + 1308356.

It is an arithmetic number, because the mean of its divisors is an integer number (2616708).

Almost surely, 2^7850121 is an apocalyptic number.

It is an amenable number.

7850121 is a deficient number, since it is larger than the sum of its proper divisors (2616711).

7850121 is a wasteful number, since it uses less digits than its factorization.

7850121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616710.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 7850121 is about 2801.8067385171. The cubic root of 7850121 is about 198.7431262209.

The spelling of 7850121 in words is "seven million, eight hundred fifty thousand, one hundred twenty-one".