142124246021 has 2 divisors, whose sum is σ = 142124246022. Its totient is φ = 142124246020.

The previous prime is 142124246003. The next prime is 142124246041. The reversal of 142124246021 is 120642421241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100473150625 + 41651095396 = 316975^2 + 204086^2 .

It is a cyclic number.

It is not a de Polignac number, because 142124246021 - 2⁶ = 142124245957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142124246041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71062123010 + 71062123011.

It is an arithmetic number, because the mean of its divisors is an integer number (71062123011).

Almost surely, 2^142124246021 is an apocalyptic number.

It is an amenable number.

142124246021 is a deficient number, since it is larger than the sum of its proper divisors (1).

142124246021 is an equidigital number, since it uses as much as digits as its factorization.

142124246021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 142124246021 its reverse (120642421241), we get a palindrome (262766667262).

The spelling of 142124246021 in words is "one hundred forty-two billion, one hundred twenty-four million, two hundred forty-six thousand, twenty-one".