7421906 has 8 divisors (see below), whose sum is σ = 11180160. Its totient is φ = 3695188.

The previous prime is 7421891. The next prime is 7421923. The reversal of 7421906 is 6091247.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7286 + ... + 8241.

It is an arithmetic number, because the mean of its divisors is an integer number (1397520).

Almost surely, 2^7421906 is an apocalyptic number.

7421906 is a deficient number, since it is larger than the sum of its proper divisors (3758254).

7421906 is a wasteful number, since it uses less digits than its factorization.

7421906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15768.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 7421906 is about 2724.3175292172. The cubic root of 7421906 is about 195.0616154183.

The spelling of 7421906 in words is "seven million, four hundred twenty-one thousand, nine hundred six".