140242847 has 2 divisors, whose sum is σ = 140242848. Its totient is φ = 140242846.

The previous prime is 140242841. The next prime is 140242873. The reversal of 140242847 is 748242041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140242847 - 2¹⁶ = 140177311 is a prime.

It is a super-2 number, since 2×140242847² = 39336112269330818, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140242841) 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 as a sum of consecutive naturals, namely, 70121423 + 70121424.

It is an arithmetic number, because the mean of its divisors is an integer number (70121424).

Almost surely, 2^140242847 is an apocalyptic number.

140242847 is a deficient number, since it is larger than the sum of its proper divisors (1).

140242847 is an equidigital number, since it uses as much as digits as its factorization.

140242847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 140242847 is about 11842.4172785796. The cubic root of 140242847 is about 519.5494704728.

Adding to 140242847 its reverse (748242041), we get a palindrome (888484888).

The spelling of 140242847 in words is "one hundred forty million, two hundred forty-two thousand, eight hundred forty-seven".