140844029 has 2 divisors, whose sum is σ = 140844030. Its totient is φ = 140844028.

The previous prime is 140843999. The next prime is 140844079. The reversal of 140844029 is 920448041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139192804 + 1651225 = 11798^2 + 1285^2 .

It is an emirp because it is prime and its reverse (920448041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140844029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140843986 and 140844004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140844079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70422014 + 70422015.

It is an arithmetic number, because the mean of its divisors is an integer number (70422015).

Almost surely, 2^140844029 is an apocalyptic number.

It is an amenable number.

140844029 is a deficient number, since it is larger than the sum of its proper divisors (1).

140844029 is an equidigital number, since it uses as much as digits as its factorization.

140844029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 140844029 is about 11867.7727059461. The cubic root of 140844029 is about 520.2908001165.

The spelling of 140844029 in words is "one hundred forty million, eight hundred forty-four thousand, twenty-nine".