201143402142 has 64 divisors (see below), whose sum is σ = 420941921088. Its totient is φ = 64012032000.

The previous prime is 201143402123. The next prime is 201143402149. The reversal of 201143402142 is 241204341102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201143402149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5683542 + ... + 5718822.

It is an arithmetic number, because the mean of its divisors is an integer number (6577217517).

Almost surely, 2^201143402142 is an apocalyptic number.

201143402142 is an abundant number, since it is smaller than the sum of its proper divisors (219798518946).

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

201143402142 is a wasteful number, since it uses less digits than its factorization.

201143402142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35805.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 201143402142 its reverse (241204341102), we get a palindrome (442347743244).

The spelling of 201143402142 in words is "two hundred one billion, one hundred forty-three million, four hundred two thousand, one hundred forty-two".