742136785 has 32 divisors (see below), whose sum is σ = 1039167360. Its totient is φ = 503774208.

The previous prime is 742136779. The next prime is 742136849. The reversal of 742136785 is 587631247.

742136785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 742136785 - 2⁷ = 742136657 is a prime.

It is a super-3 number, since 3×742136785³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39706 + ... + 55324.

It is an arithmetic number, because the mean of its divisors is an integer number (32473980).

Almost surely, 2^742136785 is an apocalyptic number.

It is an amenable number.

742136785 is a deficient number, since it is larger than the sum of its proper divisors (297030575).

742136785 is a wasteful number, since it uses less digits than its factorization.

742136785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15697.

The product of its digits is 282240, while the sum is 43.

The square root of 742136785 is about 27242.1875957126. The cubic root of 742136785 is about 905.3739325504.

The spelling of 742136785 in words is "seven hundred forty-two million, one hundred thirty-six thousand, seven hundred eighty-five".