16120729 has 4 divisors (see below), whose sum is σ = 16243920. Its totient is φ = 15997540.

The previous prime is 16120697. The next prime is 16120733. The reversal of 16120729 is 92702161.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 16120729 - 2⁵ = 16120697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16120697 and 16120706.

It is not an unprimeable number, because it can be changed into a prime (16120739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61399 + ... + 61660.

It is an arithmetic number, because the mean of its divisors is an integer number (4060980).

Almost surely, 2^16120729 is an apocalyptic number.

It is an amenable number.

16120729 is a deficient number, since it is larger than the sum of its proper divisors (123191).

16120729 is a wasteful number, since it uses less digits than its factorization.

16120729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123190.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 16120729 is about 4015.0627641421. The cubic root of 16120729 is about 252.6164100686.

The spelling of 16120729 in words is "sixteen million, one hundred twenty thousand, seven hundred twenty-nine".