7113421 has 4 divisors (see below), whose sum is σ = 8129632. Its totient is φ = 6097212.

The previous prime is 7113383. The next prime is 7113437. The reversal of 7113421 is 1243117.

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: 1243117 = 73 ⋅17029.

It is a cyclic number.

It is not a de Polignac number, because 7113421 - 2⁹ = 7112909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7113461) 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, 508095 + ... + 508108.

It is an arithmetic number, because the mean of its divisors is an integer number (2032408).

Almost surely, 2^7113421 is an apocalyptic number.

It is an amenable number.

7113421 is a deficient number, since it is larger than the sum of its proper divisors (1016211).

7113421 is a wasteful number, since it uses less digits than its factorization.

7113421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016210.

The product of its digits is 168, while the sum is 19.

The square root of 7113421 is about 2667.0997356679. The cubic root of 7113421 is about 192.3207619302.

Adding to 7113421 its reverse (1243117), we get a palindrome (8356538).

The spelling of 7113421 in words is "seven million, one hundred thirteen thousand, four hundred twenty-one".