201422403 has 64 divisors (see below), whose sum is σ = 372628480. Its totient is φ = 104696064.

The previous prime is 201422399. The next prime is 201422423. The reversal of 201422403 is 304224102.

201422403 is a `hidden beast` number, since 201 + 422 + 40 + 3 = 666.

It is not a de Polignac number, because 201422403 - 2² = 201422399 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 178800 + ... + 179922.

It is an arithmetic number, because the mean of its divisors is an integer number (5822320).

Almost surely, 2^201422403 is an apocalyptic number.

201422403 is a deficient number, since it is larger than the sum of its proper divisors (171206077).

201422403 is a wasteful number, since it uses less digits than its factorization.

201422403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 201422403 is about 14192.3360656377. The cubic root of 201422403 is about 586.1866511231.

Adding to 201422403 its reverse (304224102), we get a palindrome (505646505).

The spelling of 201422403 in words is "two hundred one million, four hundred twenty-two thousand, four hundred three".