142021400201 has 4 divisors (see below), whose sum is σ = 148196243712. Its totient is φ = 135846556692.

The previous prime is 142021400189. The next prime is 142021400219. The reversal of 142021400201 is 102004120241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142021400201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142021400201.

It is not an unprimeable number, because it can be changed into a prime (142021400281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3087421721 + ... + 3087421766.

It is an arithmetic number, because the mean of its divisors is an integer number (37049060928).

Almost surely, 2^142021400201 is an apocalyptic number.

It is an amenable number.

142021400201 is a deficient number, since it is larger than the sum of its proper divisors (6174843511).

142021400201 is an equidigital number, since it uses as much as digits as its factorization.

142021400201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174843510.

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

Adding to 142021400201 its reverse (102004120241), we get a palindrome (244025520442).

The spelling of 142021400201 in words is "one hundred forty-two billion, twenty-one million, four hundred thousand, two hundred one".