7087421 has 8 divisors (see below), whose sum is σ = 7789824. Its totient is φ = 6394720.

The previous prime is 7087411. The next prime is 7087429. The reversal of 7087421 is 1247807.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7087421 - 2⁶ = 7087357 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 (7087429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 845 + ... + 3858.

It is an arithmetic number, because the mean of its divisors is an integer number (973728).

Almost surely, 2^7087421 is an apocalyptic number.

It is an amenable number.

7087421 is a deficient number, since it is larger than the sum of its proper divisors (702403).

7087421 is a wasteful number, since it uses less digits than its factorization.

7087421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4851.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 7087421 is about 2662.2210652010. The cubic root of 7087421 is about 192.0861610541.

The spelling of 7087421 in words is "seven million, eighty-seven thousand, four hundred twenty-one".