9045121 has 4 divisors (see below), whose sum is σ = 9521200. Its totient is φ = 8569044.

The previous prime is 9045119. The next prime is 9045137. The reversal of 9045121 is 1215409.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1215409 = 13 ⋅93493.

It is a cyclic number.

It is not a de Polignac number, because 9045121 - 2¹ = 9045119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9045092 and 9045101.

It is not an unprimeable number, because it can be changed into a prime (9045161) 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, 238011 + ... + 238048.

It is an arithmetic number, because the mean of its divisors is an integer number (2380300).

Almost surely, 2^9045121 is an apocalyptic number.

It is an amenable number.

9045121 is a deficient number, since it is larger than the sum of its proper divisors (476079).

9045121 is a wasteful number, since it uses less digits than its factorization.

9045121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476078.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 9045121 is about 3007.5107647355. The cubic root of 9045121 is about 208.3554158282.

The spelling of 9045121 in words is "nine million, forty-five thousand, one hundred twenty-one".