140254129 has 4 divisors (see below), whose sum is σ = 140329584. Its totient is φ = 140178676.

The previous prime is 140254123. The next prime is 140254193. The reversal of 140254129 is 921452041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 921452041 = 8209 ⋅112249.

It is a cyclic number.

It is not a de Polignac number, because 140254129 - 2¹¹ = 140252081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140254097 and 140254106.

It is not an unprimeable number, because it can be changed into a prime (140254123) 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 in 3 ways as a sum of consecutive naturals, for example, 34867 + ... + 38680.

It is an arithmetic number, because the mean of its divisors is an integer number (35082396).

Almost surely, 2^140254129 is an apocalyptic number.

It is an amenable number.

140254129 is a deficient number, since it is larger than the sum of its proper divisors (75455).

140254129 is an equidigital number, since it uses as much as digits as its factorization.

140254129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75454.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 140254129 is about 11842.8936075606. The cubic root of 140254129 is about 519.5634020210.

The spelling of 140254129 in words is "one hundred forty million, two hundred fifty-four thousand, one hundred twenty-nine".