201442123422 has 64 divisors (see below), whose sum is σ = 472938393600. Its totient is φ = 63452521440.

The previous prime is 201442123411. The next prime is 201442123457. The reversal of 201442123422 is 224321244102.

It is a happy number.

201442123422 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 421 + 234 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1294854 + ... + 1442057.

It is an arithmetic number, because the mean of its divisors is an integer number (7389662400).

Almost surely, 2^201442123422 is an apocalyptic number.

201442123422 is an abundant number, since it is smaller than the sum of its proper divisors (271496270178).

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

201442123422 is a wasteful number, since it uses less digits than its factorization.

201442123422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736998 (or 2736992 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 201442123422 its reverse (224321244102), we get a palindrome (425763367524).

The spelling of 201442123422 in words is "two hundred one billion, four hundred forty-two million, one hundred twenty-three thousand, four hundred twenty-two".