742028685 has 32 divisors (see below), whose sum is σ = 1207869312. Its totient is φ = 388903680.

The previous prime is 742028681. The next prime is 742028711. The reversal of 742028685 is 586820247.

It is a happy number.

It is not a de Polignac number, because 742028685 - 2² = 742028681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742028681) 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, 663747 + ... + 664863.

It is an arithmetic number, because the mean of its divisors is an integer number (37745916).

Almost surely, 2^742028685 is an apocalyptic number.

It is an amenable number.

742028685 is a deficient number, since it is larger than the sum of its proper divisors (465840627).

742028685 is a wasteful number, since it uses less digits than its factorization.

742028685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 742028685 is about 27240.2034684031. The cubic root of 742028685 is about 905.3299713488.

The spelling of 742028685 in words is "seven hundred forty-two million, twenty-eight thousand, six hundred eighty-five".