101045729 has 4 divisors (see below), whose sum is σ = 101569476. Its totient is φ = 100521984.

The previous prime is 101045717. The next prime is 101045783. The reversal of 101045729 is 927540101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 927540101 = 2657 ⋅349093.

It can be written as a sum of positive squares in 2 ways, for example, as 24010000 + 77035729 = 4900^2 + 8777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101045729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101045929) 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, 261584 + ... + 261969.

It is an arithmetic number, because the mean of its divisors is an integer number (25392369).

Almost surely, 2^101045729 is an apocalyptic number.

It is an amenable number.

101045729 is a deficient number, since it is larger than the sum of its proper divisors (523747).

101045729 is an equidigital number, since it uses as much as digits as its factorization.

101045729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523746.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 101045729 is about 10052.1504664425. The cubic root of 101045729 is about 465.7712241321.

The spelling of 101045729 in words is "one hundred one million, forty-five thousand, seven hundred twenty-nine".