140542147 has 2 divisors, whose sum is σ = 140542148. Its totient is φ = 140542146.

The previous prime is 140542123. The next prime is 140542151. The reversal of 140542147 is 741245041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140542147 is a prime.

It is not a weakly prime, because it can be changed into another prime (140542117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70271073 + 70271074.

It is an arithmetic number, because the mean of its divisors is an integer number (70271074).

Almost surely, 2^140542147 is an apocalyptic number.

140542147 is a deficient number, since it is larger than the sum of its proper divisors (1).

140542147 is an equidigital number, since it uses as much as digits as its factorization.

140542147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 140542147 is about 11855.0473217107. The cubic root of 140542147 is about 519.9188075896.

Adding to 140542147 its reverse (741245041), we get a palindrome (881787188).

The spelling of 140542147 in words is "one hundred forty million, five hundred forty-two thousand, one hundred forty-seven".