142420220401 has 2 divisors, whose sum is σ = 142420220402. Its totient is φ = 142420220400.

The previous prime is 142420220389. The next prime is 142420220447. The reversal of 142420220401 is 104022024241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100549239025 + 41870981376 = 317095^2 + 204624^2 .

It is an emirp because it is prime and its reverse (104022024241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142420220401 is a prime.

It is not a weakly prime, because it can be changed into another prime (142420290401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71210110200 + 71210110201.

It is an arithmetic number, because the mean of its divisors is an integer number (71210110201).

Almost surely, 2^142420220401 is an apocalyptic number.

It is an amenable number.

142420220401 is a deficient number, since it is larger than the sum of its proper divisors (1).

142420220401 is an equidigital number, since it uses as much as digits as its factorization.

142420220401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 142420220401 its reverse (104022024241), we get a palindrome (246442244642).

The spelling of 142420220401 in words is "one hundred forty-two billion, four hundred twenty million, two hundred twenty thousand, four hundred one".