140297029 has 2 divisors, whose sum is σ = 140297030. Its totient is φ = 140297028.

The previous prime is 140297023. The next prime is 140297051. The reversal of 140297029 is 920792041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120494529 + 19802500 = 10977^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 140297029 - 2¹⁹ = 139772741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140296985 and 140297003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140297023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70148514 + 70148515.

It is an arithmetic number, because the mean of its divisors is an integer number (70148515).

Almost surely, 2^140297029 is an apocalyptic number.

It is an amenable number.

140297029 is a deficient number, since it is larger than the sum of its proper divisors (1).

140297029 is an equidigital number, since it uses as much as digits as its factorization.

140297029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 140297029 is about 11844.7046818399. The cubic root of 140297029 is about 519.6163701533.

The spelling of 140297029 in words is "one hundred forty million, two hundred ninety-seven thousand, twenty-nine".