142021443461 has 2 divisors, whose sum is σ = 142021443462. Its totient is φ = 142021443460.

The previous prime is 142021443439. The next prime is 142021443463. The reversal of 142021443461 is 164344120241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79936252900 + 62085190561 = 282730^2 + 249169^2 .

It is a cyclic number.

It is not a de Polignac number, because 142021443461 - 2²⁶ = 141954334597 is a prime.

Together with 142021443463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142021443463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71010721730 + 71010721731.

It is an arithmetic number, because the mean of its divisors is an integer number (71010721731).

Almost surely, 2^142021443461 is an apocalyptic number.

It is an amenable number.

142021443461 is a deficient number, since it is larger than the sum of its proper divisors (1).

142021443461 is an equidigital number, since it uses as much as digits as its factorization.

142021443461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 142021443461 in words is "one hundred forty-two billion, twenty-one million, four hundred forty-three thousand, four hundred sixty-one".