142354214521 has 2 divisors, whose sum is σ = 142354214522. Its totient is φ = 142354214520.

The previous prime is 142354214477. The next prime is 142354214531. The reversal of 142354214521 is 125412453241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77512684921 + 64841529600 = 278411^2 + 254640^2 .

It is an emirp because it is prime and its reverse (125412453241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142354214521 - 2²⁹ = 141817343609 is a prime.

It is not a weakly prime, because it can be changed into another prime (142354214531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71177107260 + 71177107261.

It is an arithmetic number, because the mean of its divisors is an integer number (71177107261).

Almost surely, 2^142354214521 is an apocalyptic number.

It is an amenable number.

142354214521 is a deficient number, since it is larger than the sum of its proper divisors (1).

142354214521 is an equidigital number, since it uses as much as digits as its factorization.

142354214521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 34.

Adding to 142354214521 its reverse (125412453241), we get a palindrome (267766667762).

The spelling of 142354214521 in words is "one hundred forty-two billion, three hundred fifty-four million, two hundred fourteen thousand, five hundred twenty-one".