201100013442 has 64 divisors (see below), whose sum is σ = 452182907520. Its totient is φ = 66241800000.

The previous prime is 201100013393. The next prime is 201100013453. The reversal of 201100013442 is 244310001102.

201100013442 is a `hidden beast` number, since 201 + 10 + 0 + 0 + 13 + 442 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 2817192 + ... + 2887692.

It is an arithmetic number, because the mean of its divisors is an integer number (7065357930).

Almost surely, 2^201100013442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201100013442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226091453760).

201100013442 is an abundant number, since it is smaller than the sum of its proper divisors (251082894078).

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

201100013442 is a wasteful number, since it uses less digits than its factorization.

201100013442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71136 (or 71130 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201100013442 its reverse (244310001102), we get a palindrome (445410014544).

The spelling of 201100013442 in words is "two hundred one billion, one hundred million, thirteen thousand, four hundred forty-two".