42578548 has 6 divisors (see below), whose sum is σ = 74512466. Its totient is φ = 21289272.

The previous prime is 42578539. The next prime is 42578597. The reversal of 42578548 is 84587524.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 35545444 + 7033104 = 5962^2 + 2652^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5322315 + ... + 5322322.

Almost surely, 2^42578548 is an apocalyptic number.

It is an amenable number.

42578548 is a deficient number, since it is larger than the sum of its proper divisors (31933918).

42578548 is a wasteful number, since it uses less digits than its factorization.

42578548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10644641 (or 10644639 counting only the distinct ones).

The product of its digits is 358400, while the sum is 43.

The square root of 42578548 is about 6525.2239808301. The cubic root of 42578548 is about 349.1914615166.

The spelling of 42578548 in words is "forty-two million, five hundred seventy-eight thousand, five hundred forty-eight".