424551421 has 8 divisors (see below), whose sum is σ = 513743040. Its totient is φ = 342495168.

The previous prime is 424551419. The next prime is 424551461. The reversal of 424551421 is 124155424.

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

It is a cyclic number.

It is not a de Polignac number, because 424551421 - 2¹ = 424551419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 424551421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424551461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1783711 + ... + 1783948.

It is an arithmetic number, because the mean of its divisors is an integer number (64217880).

Almost surely, 2^424551421 is an apocalyptic number.

It is an amenable number.

424551421 is a deficient number, since it is larger than the sum of its proper divisors (89191619).

424551421 is a wasteful number, since it uses less digits than its factorization.

424551421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567683.

The product of its digits is 6400, while the sum is 28.

The square root of 424551421 is about 20604.6456169476. The cubic root of 424551421 is about 751.5826850540.

The spelling of 424551421 in words is "four hundred twenty-four million, five hundred fifty-one thousand, four hundred twenty-one".