2472421 has 4 divisors (see below), whose sum is σ = 2825632. Its totient is φ = 2119212.

The previous prime is 2472403. The next prime is 2472443. The reversal of 2472421 is 1242742.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1242742 = 2 ⋅621371.

It is a cyclic number.

It is not a de Polignac number, because 2472421 - 2⁵ = 2472389 is a prime.

It is a super-2 number, since 2×2472421² = 12225731202482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2472392 and 2472401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2472461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176595 + ... + 176608.

It is an arithmetic number, because the mean of its divisors is an integer number (706408).

2^2472421 is an apocalyptic number.

It is an amenable number.

2472421 is a deficient number, since it is larger than the sum of its proper divisors (353211).

2472421 is an equidigital number, since it uses as much as digits as its factorization.

2472421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353210.

The product of its digits is 896, while the sum is 22.

The square root of 2472421 is about 1572.3933986124. The cubic root of 2472421 is about 135.2199614855.

The spelling of 2472421 in words is "two million, four hundred seventy-two thousand, four hundred twenty-one".