140812069 has 2 divisors, whose sum is σ = 140812070. Its totient is φ = 140812068.

The previous prime is 140812039. The next prime is 140812093. The reversal of 140812069 is 960218041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127577025 + 13235044 = 11295^2 + 3638^2 .

It is an emirp because it is prime and its reverse (960218041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140812069 - 2⁹ = 140811557 is a prime.

It is a super-2 number, since 2×140812069² = 39656077552121522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140812069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140812039) 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, 70406034 + 70406035.

It is an arithmetic number, because the mean of its divisors is an integer number (70406035).

Almost surely, 2^140812069 is an apocalyptic number.

It is an amenable number.

140812069 is a deficient number, since it is larger than the sum of its proper divisors (1).

140812069 is an equidigital number, since it uses as much as digits as its factorization.

140812069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 140812069 is about 11866.4261258392. The cubic root of 140812069 is about 520.2514427459.

The spelling of 140812069 in words is "one hundred forty million, eight hundred twelve thousand, sixty-nine".