42047384 has 16 divisors (see below), whose sum is σ = 78913320. Its totient is φ = 21003840.

The previous prime is 42047371. The next prime is 42047387. The reversal of 42047384 is 48374024.

It is a self number, because there is not a number n which added to its sum of digits gives 42047384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42047387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10532 + ... + 13964.

Almost surely, 2^42047384 is an apocalyptic number.

It is an amenable number.

42047384 is a deficient number, since it is larger than the sum of its proper divisors (36865936).

42047384 is a wasteful number, since it uses less digits than its factorization.

42047384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970 (or 4966 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 42047384 is about 6484.3954228594. The cubic root of 42047384 is about 347.7333360320.

The spelling of 42047384 in words is "forty-two million, forty-seven thousand, three hundred eighty-four".