201201204042 has 24 divisors (see below), whose sum is σ = 452081718816. Its totient is φ = 67067067852.

The previous prime is 201201203993. The next prime is 201201204053. The reversal of 201201204042 is 240402102102.

201201204042 is a `hidden beast` number, since 20 + 120 + 120 + 404 + 2 = 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 11 ways as a sum of consecutive naturals, for example, 206996638 + ... + 206997609.

It is an arithmetic number, because the mean of its divisors is an integer number (18836738284).

Almost surely, 2^201201204042 is an apocalyptic number.

201201204042 is an abundant number, since it is smaller than the sum of its proper divisors (250880514774).

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

201201204042 is an equidigital number, since it uses as much as digits as its factorization.

201201204042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413994264 (or 413994252 counting only the distinct ones).

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

Adding to 201201204042 its reverse (240402102102), we get a palindrome (441603306144).

The spelling of 201201204042 in words is "two hundred one billion, two hundred one million, two hundred four thousand, forty-two".