140102729 has 32 divisors (see below), whose sum is σ = 170843904. Its totient is φ = 113541120.

The previous prime is 140102719. The next prime is 140102731. The reversal of 140102729 is 927201041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140102729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140102698 and 140102707.

It is not an unprimeable number, because it can be changed into a prime (140102719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218249 + ... + 218889.

It is an arithmetic number, because the mean of its divisors is an integer number (5338872).

Almost surely, 2^140102729 is an apocalyptic number.

It is an amenable number.

140102729 is a deficient number, since it is larger than the sum of its proper divisors (30741175).

140102729 is a wasteful number, since it uses less digits than its factorization.

140102729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 140102729 is about 11836.4998627128. The cubic root of 140102729 is about 519.3763838301.

The spelling of 140102729 in words is "one hundred forty million, one hundred two thousand, seven hundred twenty-nine".