39191042 has 16 divisors (see below), whose sum is σ = 64603872. Its totient is φ = 17682720.

The previous prime is 39191041. The next prime is 39191063. The reversal of 39191042 is 24019193.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 39190996 and 39191014.

It is not an unprimeable number, because it can be changed into a prime (39191041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3488 + ... + 9515.

It is an arithmetic number, because the mean of its divisors is an integer number (4037742).

Almost surely, 2^39191042 is an apocalyptic number.

39191042 is a deficient number, since it is larger than the sum of its proper divisors (25412830).

39191042 is a wasteful number, since it uses less digits than its factorization.

39191042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13153.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 39191042 is about 6260.2749140912. The cubic root of 39191042 is about 339.6739723609.

The spelling of 39191042 in words is "thirty-nine million, one hundred ninety-one thousand, forty-two".