1340214729 has 48 divisors (see below), whose sum is σ = 2196460800. Its totient is φ = 723588096.

The previous prime is 1340214649. The next prime is 1340214731. The reversal of 1340214729 is 9274120431.

It is not a de Polignac number, because 1340214729 - 2⁹ = 1340214217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340214729.

It is not an unprimeable number, because it can be changed into a prime (1340214739) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197017 + ... + 203705.

It is an arithmetic number, because the mean of its divisors is an integer number (45759600).

Almost surely, 2^1340214729 is an apocalyptic number.

It is an amenable number.

1340214729 is a deficient number, since it is larger than the sum of its proper divisors (856246071).

1340214729 is a wasteful number, since it uses less digits than its factorization.

1340214729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782 (or 6775 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1340214729 is about 36608.9432925890. The cubic root of 1340214729 is about 1102.5326571329.

The spelling of 1340214729 in words is "one billion, three hundred forty million, two hundred fourteen thousand, seven hundred twenty-nine".