421550423 has 4 divisors (see below), whose sum is σ = 481771920. Its totient is φ = 361328928.

The previous prime is 421550401. The next prime is 421550429. The reversal of 421550423 is 324055124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421550423 - 2⁸ = 421550167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421550392 and 421550401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421550429) 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, 30110738 + ... + 30110751.

It is an arithmetic number, because the mean of its divisors is an integer number (120442980).

Almost surely, 2^421550423 is an apocalyptic number.

421550423 is a deficient number, since it is larger than the sum of its proper divisors (60221497).

421550423 is an equidigital number, since it uses as much as digits as its factorization.

421550423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60221496.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 421550423 is about 20531.6931352482. The cubic root of 421550423 is about 749.8076087258.

The spelling of 421550423 in words is "four hundred twenty-one million, five hundred fifty thousand, four hundred twenty-three".