39019642 has 4 divisors (see below), whose sum is σ = 58529466. Its totient is φ = 19509820.

The previous prime is 39019639. The next prime is 39019649. The reversal of 39019642 is 24691093.

39019642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21538881 + 17480761 = 4641^2 + 4181^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39019598 and 39019607.

It is not an unprimeable number, because it can be changed into a prime (39019649) 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 as a sum of consecutive naturals, namely, 9754909 + ... + 9754912.

Almost surely, 2^39019642 is an apocalyptic number.

39019642 is a deficient number, since it is larger than the sum of its proper divisors (19509824).

39019642 is a wasteful number, since it uses less digits than its factorization.

39019642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19509823.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 39019642 is about 6246.5704190380. The cubic root of 39019642 is about 339.1780665200.

The spelling of 39019642 in words is "thirty-nine million, nineteen thousand, six hundred forty-two".