42538736 has 10 divisors (see below), whose sum is σ = 82418832. Its totient is φ = 21269360.

The previous prime is 42538729. The next prime is 42538747. The reversal of 42538736 is 63783524.

It is a self number, because there is not a number n which added to its sum of digits gives 42538736.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1329320 + ... + 1329351.

Almost surely, 2^42538736 is an apocalyptic number.

It is an amenable number.

42538736 is a deficient number, since it is larger than the sum of its proper divisors (39880096).

42538736 is a wasteful number, since it uses less digits than its factorization.

42538736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658679 (or 2658673 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 42538736 is about 6522.1726441424. The cubic root of 42538736 is about 349.0825933480.

The spelling of 42538736 in words is "forty-two million, five hundred thirty-eight thousand, seven hundred thirty-six".