7146421 has 4 divisors (see below), whose sum is σ = 7253152. Its totient is φ = 7039692.

The previous prime is 7146401. The next prime is 7146437. The reversal of 7146421 is 1246417.

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 7146421 - 2⁵ = 7146389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7146401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53265 + ... + 53398.

It is an arithmetic number, because the mean of its divisors is an integer number (1813288).

Almost surely, 2^7146421 is an apocalyptic number.

It is an amenable number.

7146421 is a deficient number, since it is larger than the sum of its proper divisors (106731).

7146421 is a wasteful number, since it uses less digits than its factorization.

7146421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106730.

The product of its digits is 1344, while the sum is 25.

The square root of 7146421 is about 2673.2790725998. The cubic root of 7146421 is about 192.6177027961.

The spelling of 7146421 in words is "seven million, one hundred forty-six thousand, four hundred twenty-one".