39742730 has 16 divisors (see below), whose sum is σ = 73059840. Its totient is φ = 15558672.

The previous prime is 39742727. The next prime is 39742751. The reversal of 39742730 is 3724793.

39742730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41810 + ... + 42749.

It is an arithmetic number, because the mean of its divisors is an integer number (4566240).

Almost surely, 2^39742730 is an apocalyptic number.

39742730 is a deficient number, since it is larger than the sum of its proper divisors (33317110).

39742730 is a wasteful number, since it uses less digits than its factorization.

39742730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84613.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 39742730 is about 6304.1835315923. The cubic root of 39742730 is about 341.2604025686.

The spelling of 39742730 in words is "thirty-nine million, seven hundred forty-two thousand, seven hundred thirty".