142210012421 has 2 divisors, whose sum is σ = 142210012422. Its totient is φ = 142210012420.

The previous prime is 142210012363. The next prime is 142210012429. The reversal of 142210012421 is 124210012241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128909003521 + 13301008900 = 359039^2 + 115330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142210012421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142210012393 and 142210012402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142210012429) 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 as a sum of consecutive naturals, namely, 71105006210 + 71105006211.

It is an arithmetic number, because the mean of its divisors is an integer number (71105006211).

Almost surely, 2^142210012421 is an apocalyptic number.

It is an amenable number.

142210012421 is a deficient number, since it is larger than the sum of its proper divisors (1).

142210012421 is an equidigital number, since it uses as much as digits as its factorization.

142210012421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 142210012421 its reverse (124210012241), we get a palindrome (266420024662).

The spelling of 142210012421 in words is "one hundred forty-two billion, two hundred ten million, twelve thousand, four hundred twenty-one".