140426243 has 2 divisors, whose sum is σ = 140426244. Its totient is φ = 140426242.

The previous prime is 140426227. The next prime is 140426267. The reversal of 140426243 is 342624041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140426243 - 2⁴ = 140426227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (140426843) 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, 70213121 + 70213122.

It is an arithmetic number, because the mean of its divisors is an integer number (70213122).

Almost surely, 2^140426243 is an apocalyptic number.

140426243 is a deficient number, since it is larger than the sum of its proper divisors (1).

140426243 is an equidigital number, since it uses as much as digits as its factorization.

140426243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 140426243 is about 11850.1579314370. The cubic root of 140426243 is about 519.7758439690.

The spelling of 140426243 in words is "one hundred forty million, four hundred twenty-six thousand, two hundred forty-three".