140152121 has 2 divisors, whose sum is σ = 140152122. Its totient is φ = 140152120.

The previous prime is 140152109. The next prime is 140152169. The reversal of 140152121 is 121251041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137475625 + 2676496 = 11725^2 + 1636^2 .

It is an emirp because it is prime and its reverse (121251041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140152121 - 2¹⁰ = 140151097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140152121.

It is not a weakly prime, because it can be changed into another prime (140152321) 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, 70076060 + 70076061.

It is an arithmetic number, because the mean of its divisors is an integer number (70076061).

Almost surely, 2^140152121 is an apocalyptic number.

It is an amenable number.

140152121 is a deficient number, since it is larger than the sum of its proper divisors (1).

140152121 is an equidigital number, since it uses as much as digits as its factorization.

140152121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 140152121 is about 11838.5861064571. The cubic root of 140152121 is about 519.4374105366.

The spelling of 140152121 in words is "one hundred forty million, one hundred fifty-two thousand, one hundred twenty-one".