3420758729 has 8 divisors (see below), whose sum is σ = 3439437120. Its totient is φ = 3402130576.

The previous prime is 3420758707. The next prime is 3420758753. The reversal of 3420758729 is 9278570243.

It is a happy number.

3420758729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3420758729 - 2¹² = 3420754633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3420758779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128252 + ... + 152610.

It is an arithmetic number, because the mean of its divisors is an integer number (429929640).

Almost surely, 2^3420758729 is an apocalyptic number.

It is an amenable number.

3420758729 is a deficient number, since it is larger than the sum of its proper divisors (18678391).

3420758729 is a wasteful number, since it uses less digits than its factorization.

3420758729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25119.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 3420758729 is about 58487.2527051835. The cubic root of 3420758729 is about 1506.7486624642.

The spelling of 3420758729 in words is "three billion, four hundred twenty million, seven hundred fifty-eight thousand, seven hundred twenty-nine".