201142233420 has 48 divisors (see below), whose sum is σ = 564126194688. Its totient is φ = 53549553600.

The previous prime is 201142233373. The next prime is 201142233427. The reversal of 201142233420 is 24332241102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201142233427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2725006 + ... + 2797845.

It is an arithmetic number, because the mean of its divisors is an integer number (11752629056).

Almost surely, 2^201142233420 is an apocalyptic number.

201142233420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201142233420 is an abundant number, since it is smaller than the sum of its proper divisors (362983961268).

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

201142233420 is a wasteful number, since it uses less digits than its factorization.

201142233420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5523470 (or 5523468 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 201142233420 its reverse (24332241102), we get a palindrome (225474474522).

The spelling of 201142233420 in words is "two hundred one billion, one hundred forty-two million, two hundred thirty-three thousand, four hundred twenty".