201422424 has 64 divisors (see below), whose sum is σ = 576576000. Its totient is φ = 57441024.

The previous prime is 201422423. The next prime is 201422447. The reversal of 201422424 is 424224102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 201422424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201422423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143277 + ... + 144675.

It is an arithmetic number, because the mean of its divisors is an integer number (9009000).

Almost surely, 2^201422424 is an apocalyptic number.

201422424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201422424 is an abundant number, since it is smaller than the sum of its proper divisors (375153576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201422424 is a wasteful number, since it uses less digits than its factorization.

201422424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272 (or 2268 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 201422424 is about 14192.3368054736. The cubic root of 201422424 is about 586.1866714947.

Adding to 201422424 its reverse (424224102), we get a palindrome (625646526).

The spelling of 201422424 in words is "two hundred one million, four hundred twenty-two thousand, four hundred twenty-four".