142010521431491 has 2 divisors, whose sum is σ = 142010521431492. Its totient is φ = 142010521431490.

The previous prime is 142010521431473. The next prime is 142010521431497. The reversal of 142010521431491 is 194134125010241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142010521431491 is a prime.

It is not a weakly prime, because it can be changed into another prime (142010521431497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71005260715745 + 71005260715746.

It is an arithmetic number, because the mean of its divisors is an integer number (71005260715746).

Almost surely, 2^{142010521431491} is an apocalyptic number.

142010521431491 is a deficient number, since it is larger than the sum of its proper divisors (1).

142010521431491 is an equidigital number, since it uses as much as digits as its factorization.

142010521431491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 142010521431491 in words is "one hundred forty-two trillion, ten billion, five hundred twenty-one million, four hundred thirty-one thousand, four hundred ninety-one".