201044142 has 48 divisors (see below), whose sum is σ = 496707120. Its totient is φ = 58219776.

The previous prime is 201044141. The next prime is 201044189. The reversal of 201044142 is 241440102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21292 + ... + 29247.

It is an arithmetic number, because the mean of its divisors is an integer number (10348065).

Almost surely, 2^201044142 is an apocalyptic number.

201044142 is an abundant number, since it is smaller than the sum of its proper divisors (295662978).

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

201044142 is a wasteful number, since it uses less digits than its factorization.

201044142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50577 (or 50574 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 201044142 is about 14179.0035616047. The cubic root of 201044142 is about 585.8194783050.

Adding to 201044142 its reverse (241440102), we get a palindrome (442484244).

The spelling of 201044142 in words is "two hundred one million, forty-four thousand, one hundred forty-two".