201001240142 has 32 divisors (see below), whose sum is σ = 315924777792. Its totient is φ = 95729889024.

The previous prime is 201001240123. The next prime is 201001240183. The reversal of 201001240142 is 241042100102.

It is a self number, because there is not a number n which added to its sum of digits gives 201001240142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31049018 + ... + 31055490.

It is an arithmetic number, because the mean of its divisors is an integer number (9872649306).

Almost surely, 2^201001240142 is an apocalyptic number.

201001240142 is a deficient number, since it is larger than the sum of its proper divisors (114923537650).

201001240142 is a wasteful number, since it uses less digits than its factorization.

201001240142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9212.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201001240142 its reverse (241042100102), we get a palindrome (442043340244).

The spelling of 201001240142 in words is "two hundred one billion, one million, two hundred forty thousand, one hundred forty-two".