140418209729 has 16 divisors (see below), whose sum is σ = 169122334080. Its totient is φ = 113890043520.

The previous prime is 140418209681. The next prime is 140418209731. The reversal of 140418209729 is 927902814041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140418209729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140418209629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505412 + ... + 732309.

It is an arithmetic number, because the mean of its divisors is an integer number (10570145880).

Almost surely, 2^140418209729 is an apocalyptic number.

140418209729 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

140418209729 is a deficient number, since it is larger than the sum of its proper divisors (28704124351).

140418209729 is a wasteful number, since it uses less digits than its factorization.

140418209729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238600.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 140418209729 in words is "one hundred forty billion, four hundred eighteen million, two hundred nine thousand, seven hundred twenty-nine".