39742545 has 8 divisors (see below), whose sum is σ = 63588096. Its totient is φ = 21196016.

The previous prime is 39742543. The next prime is 39742553. The reversal of 39742545 is 54524793.

39742545 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 39742545 - 2¹ = 39742543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39742541) by changing a digit.

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, 1324737 + ... + 1324766.

It is an arithmetic number, because the mean of its divisors is an integer number (7948512).

Almost surely, 2^39742545 is an apocalyptic number.

It is an amenable number.

39742545 is a deficient number, since it is larger than the sum of its proper divisors (23845551).

39742545 is a wasteful number, since it uses less digits than its factorization.

39742545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649511.

The product of its digits is 151200, while the sum is 39.

The square root of 39742545 is about 6304.1688587791. The cubic root of 39742545 is about 341.2598730522.

The spelling of 39742545 in words is "thirty-nine million, seven hundred forty-two thousand, five hundred forty-five".