735042721 has 16 divisors (see below), whose sum is σ = 886552960. Its totient is φ = 595330560.

The previous prime is 735042713. The next prime is 735042727. The reversal of 735042721 is 127240537.

It is a cyclic number.

It is not a de Polignac number, because 735042721 - 2³ = 735042713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (735042727) 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, 45841 + ... + 59761.

It is an arithmetic number, because the mean of its divisors is an integer number (55409560).

Almost surely, 2^735042721 is an apocalyptic number.

It is an amenable number.

735042721 is a deficient number, since it is larger than the sum of its proper divisors (151510239).

735042721 is a wasteful number, since it uses less digits than its factorization.

735042721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 735042721 is about 27111.6713059155. The cubic root of 735042721 is about 902.4798770845.

The spelling of 735042721 in words is "seven hundred thirty-five million, forty-two thousand, seven hundred twenty-one".