7472421 has 12 divisors (see below), whose sum is σ = 11774880. Its totient is φ = 4528680.

The previous prime is 7472419. The next prime is 7472429. The reversal of 7472421 is 1242747.

It is a happy number.

It is not a de Polignac number, because 7472421 - 2¹ = 7472419 is a prime.

It is a Curzon number.

7472421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7472429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37641 + ... + 37838.

It is an arithmetic number, because the mean of its divisors is an integer number (981240).

Almost surely, 2^7472421 is an apocalyptic number.

It is an amenable number.

7472421 is a deficient number, since it is larger than the sum of its proper divisors (4302459).

7472421 is a wasteful number, since it uses less digits than its factorization.

7472421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75496 (or 75493 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 7472421 is about 2733.5729366527. The cubic root of 7472421 is about 195.5031581788.

The spelling of 7472421 in words is "seven million, four hundred seventy-two thousand, four hundred twenty-one".