140146243 has 2 divisors, whose sum is σ = 140146244. Its totient is φ = 140146242.

The previous prime is 140146231. The next prime is 140146267. The reversal of 140146243 is 342641041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140146243 is a prime.

It is not a weakly prime, because it can be changed into another prime (140146943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70073121 + 70073122.

It is an arithmetic number, because the mean of its divisors is an integer number (70073122).

Almost surely, 2^140146243 is an apocalyptic number.

140146243 is a deficient number, since it is larger than the sum of its proper divisors (1).

140146243 is an equidigital number, since it uses as much as digits as its factorization.

140146243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 140146243 is about 11838.3378478569. The cubic root of 140146243 is about 519.4301486753.

Adding to 140146243 its reverse (342641041), we get a palindrome (482787284).

The spelling of 140146243 in words is "one hundred forty million, one hundred forty-six thousand, two hundred forty-three".