7421087 has 4 divisors (see below), whose sum is σ = 7504560. Its totient is φ = 7337616.

The previous prime is 7421083. The next prime is 7421093. The reversal of 7421087 is 7801247.

7421087 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 7421087 - 2² = 7421083 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421083) 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, 41603 + ... + 41780.

It is an arithmetic number, because the mean of its divisors is an integer number (1876140).

Almost surely, 2^7421087 is an apocalyptic number.

7421087 is a deficient number, since it is larger than the sum of its proper divisors (83473).

7421087 is an equidigital number, since it uses as much as digits as its factorization.

7421087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83472.

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

The square root of 7421087 is about 2724.1672121953. The cubic root of 7421087 is about 195.0544402021.

The spelling of 7421087 in words is "seven million, four hundred twenty-one thousand, eighty-seven".