7134821 has 4 divisors (see below), whose sum is σ = 7327692. Its totient is φ = 6941952.

The previous prime is 7134817. The next prime is 7134833. The reversal of 7134821 is 1284317.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2464900 + 4669921 = 1570^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 7134821 - 2² = 7134817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7134851) 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, 96380 + ... + 96453.

It is an arithmetic number, because the mean of its divisors is an integer number (1831923).

Almost surely, 2^7134821 is an apocalyptic number.

It is an amenable number.

7134821 is a deficient number, since it is larger than the sum of its proper divisors (192871).

7134821 is a wasteful number, since it uses less digits than its factorization.

7134821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192870.

The product of its digits is 1344, while the sum is 26.

The square root of 7134821 is about 2671.1085713613. The cubic root of 7134821 is about 192.5134279721.

The spelling of 7134821 in words is "seven million, one hundred thirty-four thousand, eight hundred twenty-one".