141818729 has 16 divisors (see below), whose sum is σ = 159440400. Its totient is φ = 125239296.

The previous prime is 141818711. The next prime is 141818731. The reversal of 141818729 is 927818141.

It can be written as a sum of positive squares in 8 ways, for example, as 40615129 + 101203600 = 6373^2 + 10060^2 .

It is not a de Polignac number, because 141818729 - 2¹⁶ = 141753193 is a prime.

It is a super-2 number, since 2×141818729² = 40225103790350882, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141818329) 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 15 ways as a sum of consecutive naturals, for example, 40937 + ... + 44265.

It is an arithmetic number, because the mean of its divisors is an integer number (9965025).

Almost surely, 2^141818729 is an apocalyptic number.

It is an amenable number.

141818729 is a deficient number, since it is larger than the sum of its proper divisors (17621671).

141818729 is a wasteful number, since it uses less digits than its factorization.

141818729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484.

The product of its digits is 32256, while the sum is 41.

The square root of 141818729 is about 11908.7668967026. The cubic root of 141818729 is about 521.4882525474.

The spelling of 141818729 in words is "one hundred forty-one million, eight hundred eighteen thousand, seven hundred twenty-nine".