39561242 has 16 divisors (see below), whose sum is σ = 70768512. Its totient is φ = 16217520.

The previous prime is 39561209. The next prime is 39561259. The reversal of 39561242 is 24216593.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 39561199 and 39561208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61109 + ... + 61752.

It is an arithmetic number, because the mean of its divisors is an integer number (4423032).

Almost surely, 2^39561242 is an apocalyptic number.

39561242 is a deficient number, since it is larger than the sum of its proper divisors (31207270).

39561242 is a wasteful number, since it uses less digits than its factorization.

39561242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122893.

The product of its digits is 12960, while the sum is 32.

The square root of 39561242 is about 6289.7728098875. The cubic root of 39561242 is about 340.7401465435.

The spelling of 39561242 in words is "thirty-nine million, five hundred sixty-one thousand, two hundred forty-two".