421550422 has 4 divisors (see below), whose sum is σ = 632325636. Its totient is φ = 210775210.

The previous prime is 421550401. The next prime is 421550429. The reversal of 421550422 is 224055124.

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

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 polite number, since it can be written as a sum of consecutive naturals, namely, 105387604 + ... + 105387607.

It is an arithmetic number, because the mean of its divisors is an integer number (158081409).

Almost surely, 2^421550422 is an apocalyptic number.

421550422 is a deficient number, since it is larger than the sum of its proper divisors (210775214).

421550422 is a wasteful number, since it uses less digits than its factorization.

421550422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210775213.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 421550422 is about 20531.6931108957. The cubic root of 421550422 is about 749.8076081329.

The spelling of 421550422 in words is "four hundred twenty-one million, five hundred fifty thousand, four hundred twenty-two".