7421001 has 24 divisors (see below), whose sum is σ = 12120480. Its totient is φ = 4015872.

The previous prime is 7420969. The next prime is 7421003. The reversal of 7421001 is 1001247.

It is not a de Polignac number, because 7421001 - 2⁵ = 7420969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7421003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1465 + ... + 4121.

It is an arithmetic number, because the mean of its divisors is an integer number (505020).

Almost surely, 2^7421001 is an apocalyptic number.

It is an amenable number.

7421001 is a deficient number, since it is larger than the sum of its proper divisors (4699479).

7421001 is a wasteful number, since it uses less digits than its factorization.

7421001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693 (or 2686 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 7421001 is about 2724.1514275091. The cubic root of 7421001 is about 195.0536867300.

Adding to 7421001 its reverse (1001247), we get a palindrome (8422248).

The spelling of 7421001 in words is "seven million, four hundred twenty-one thousand, one".