4512121 has 8 divisors (see below), whose sum is σ = 4627584. Its totient is φ = 4398240.

The previous prime is 4512107. The next prime is 4512127. The reversal of 4512121 is 1212154.

4512121 = T₂₄₃ + T₂₄₄ + ... + T₃₄₅.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4512121 - 2⁹ = 4511609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4512095 and 4512104.

It is not an unprimeable number, because it can be changed into a prime (4512127) 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, 7005 + ... + 7621.

It is an arithmetic number, because the mean of its divisors is an integer number (578448).

Almost surely, 2^4512121 is an apocalyptic number.

It is an amenable number.

4512121 is a deficient number, since it is larger than the sum of its proper divisors (115463).

4512121 is a wasteful number, since it uses less digits than its factorization.

4512121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791.

The product of its digits is 80, while the sum is 16.

The square root of 4512121 is about 2124.1753694081. The cubic root of 4512121 is about 165.2444616278.

Adding to 4512121 its reverse (1212154), we get a palindrome (5724275).

The spelling of 4512121 in words is "four million, five hundred twelve thousand, one hundred twenty-one".