146042729 has 4 divisors (see below), whose sum is σ = 166905984. Its totient is φ = 125179476.

The previous prime is 146042693. The next prime is 146042747. The reversal of 146042729 is 927240641.

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: 927240641 = 19 ⋅48802139.

It is a cyclic number.

It is not a de Polignac number, because 146042729 - 2⁸ = 146042473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146042129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10431617 + ... + 10431630.

It is an arithmetic number, because the mean of its divisors is an integer number (41726496).

Almost surely, 2^146042729 is an apocalyptic number.

It is an amenable number.

146042729 is a deficient number, since it is larger than the sum of its proper divisors (20863255).

146042729 is an equidigital number, since it uses as much as digits as its factorization.

146042729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20863254.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 146042729 is about 12084.8139828464. The cubic root of 146042729 is about 526.6151066244.

The spelling of 146042729 in words is "one hundred forty-six million, forty-two thousand, seven hundred twenty-nine".