42547938 has 8 divisors (see below), whose sum is σ = 85095888. Its totient is φ = 14182644.

The previous prime is 42547937. The next prime is 42547951. The reversal of 42547938 is 83974524.

It is a sphenic number, since it is the product of 3 distinct primes.

42547938 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42547938.

It is not an unprimeable number, because it can be changed into a prime (42547933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3545656 + ... + 3545667.

It is an arithmetic number, because the mean of its divisors is an integer number (10636986).

Almost surely, 2^42547938 is an apocalyptic number.

42547938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42547938 is a wasteful number, since it uses less digits than its factorization.

42547938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091328.

The product of its digits is 241920, while the sum is 42.

The square root of 42547938 is about 6522.8780457709. The cubic root of 42547938 is about 349.1077627719.

The spelling of 42547938 in words is "forty-two million, five hundred forty-seven thousand, nine hundred thirty-eight".