7011421 has 4 divisors (see below), whose sum is σ = 7018144. Its totient is φ = 7004700.

The previous prime is 7011379. The next prime is 7011439. The reversal of 7011421 is 1241107.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1241107 = 7 ⋅177301.

It is a cyclic number.

It is not a de Polignac number, because 7011421 - 2⁹ = 7010909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7011395 and 7011404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7011491) 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, 1425 + ... + 4006.

It is an arithmetic number, because the mean of its divisors is an integer number (1754536).

Almost surely, 2^7011421 is an apocalyptic number.

It is an amenable number.

7011421 is a deficient number, since it is larger than the sum of its proper divisors (6723).

7011421 is a wasteful number, since it uses less digits than its factorization.

7011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6722.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 7011421 is about 2647.9087975231. The cubic root of 7011421 is about 191.3970978764.

Adding to 7011421 its reverse (1241107), we get a palindrome (8252528).

The spelling of 7011421 in words is "seven million, eleven thousand, four hundred twenty-one".