140428503781 has 2 divisors, whose sum is σ = 140428503782. Its totient is φ = 140428503780.

The previous prime is 140428503707. The next prime is 140428503793. The reversal of 140428503781 is 187305824041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113478028225 + 26950475556 = 336865^2 + 164166^2 .

It is a cyclic number.

It is not a de Polignac number, because 140428503781 - 2⁹ = 140428503269 is a prime.

It is a super-2 number, since 2×140428503781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140428503181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70214251890 + 70214251891.

It is an arithmetic number, because the mean of its divisors is an integer number (70214251891).

Almost surely, 2^140428503781 is an apocalyptic number.

It is an amenable number.

140428503781 is a deficient number, since it is larger than the sum of its proper divisors (1).

140428503781 is an equidigital number, since it uses as much as digits as its factorization.

140428503781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 140428503781 in words is "one hundred forty billion, four hundred twenty-eight million, five hundred three thousand, seven hundred eighty-one".