142124304304021 has 16 divisors (see below), whose sum is σ = 158335356009600. Its totient is φ = 126667345146048.

The previous prime is 142124304303979. The next prime is 142124304304117. The reversal of 142124304304021 is 120403403421241.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142124304304021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142124304304921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136992840 + ... + 138026398.

It is an arithmetic number, because the mean of its divisors is an integer number (9895959750600).

Almost surely, 2^{142124304304021} is an apocalyptic number.

It is an amenable number.

142124304304021 is a deficient number, since it is larger than the sum of its proper divisors (16211051705579).

142124304304021 is a wasteful number, since it uses less digits than its factorization.

142124304304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398348.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 142124304304021 its reverse (120403403421241), we get a palindrome (262527707725262).

The spelling of 142124304304021 in words is "one hundred forty-two trillion, one hundred twenty-four billion, three hundred four million, three hundred four thousand, twenty-one".