7432121 has 4 divisors (see below), whose sum is σ = 7443072. Its totient is φ = 7421172.

The previous prime is 7432099. The next prime is 7432127. The reversal of 7432121 is 1212347.

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 7432121 - 2¹⁰ = 7431097 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7432093 and 7432102.

It is not an unprimeable number, because it can be changed into a prime (7432127) 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, 4385 + ... + 5838.

It is an arithmetic number, because the mean of its divisors is an integer number (1860768).

Almost surely, 2^7432121 is an apocalyptic number.

It is an amenable number.

7432121 is a deficient number, since it is larger than the sum of its proper divisors (10951).

7432121 is a wasteful number, since it uses less digits than its factorization.

7432121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10950.

The product of its digits is 336, while the sum is 20.

The square root of 7432121 is about 2726.1916660426. The cubic root of 7432121 is about 195.1510641826.

Adding to 7432121 its reverse (1212347), we get a palindrome (8644468).

The spelling of 7432121 in words is "seven million, four hundred thirty-two thousand, one hundred twenty-one".