140290873 has 2 divisors, whose sum is σ = 140290874. Its totient is φ = 140290872.

The previous prime is 140290847. The next prime is 140290883. The reversal of 140290873 is 378092041.

140290873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132434064 + 7856809 = 11508^2 + 2803^2 .

It is an emirp because it is prime and its reverse (378092041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140290873 - 2²¹ = 138193721 is a prime.

It is not a weakly prime, because it can be changed into another prime (140290883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70145436 + 70145437.

It is an arithmetic number, because the mean of its divisors is an integer number (70145437).

Almost surely, 2^140290873 is an apocalyptic number.

It is an amenable number.

140290873 is a deficient number, since it is larger than the sum of its proper divisors (1).

140290873 is an equidigital number, since it uses as much as digits as its factorization.

140290873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 140290873 is about 11844.4448160308. Note that the first 3 decimals coincide. The cubic root of 140290873 is about 519.6087700751.

The spelling of 140290873 in words is "one hundred forty million, two hundred ninety thousand, eight hundred seventy-three".