140420204121287 has 2 divisors, whose sum is σ = 140420204121288. Its totient is φ = 140420204121286.

The previous prime is 140420204121259. The next prime is 140420204121371. The reversal of 140420204121287 is 782121402024041.

It is a weak prime.

It is an emirp because it is prime and its reverse (782121402024041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140420204121287 - 2⁸ = 140420204121031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140420204121287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140420204121787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70210102060643 + 70210102060644.

It is an arithmetic number, because the mean of its divisors is an integer number (70210102060644).

Almost surely, 2^{140420204121287} is an apocalyptic number.

140420204121287 is a deficient number, since it is larger than the sum of its proper divisors (1).

140420204121287 is an equidigital number, since it uses as much as digits as its factorization.

140420204121287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57344, while the sum is 38.

The spelling of 140420204121287 in words is "one hundred forty trillion, four hundred twenty billion, two hundred four million, one hundred twenty-one thousand, two hundred eighty-seven".