42526478 has 4 divisors (see below), whose sum is σ = 63789720. Its totient is φ = 21263238.

The previous prime is 42526447. The next prime is 42526481. The reversal of 42526478 is 87462524.

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

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, 10631618 + ... + 10631621.

It is an arithmetic number, because the mean of its divisors is an integer number (15947430).

Almost surely, 2^42526478 is an apocalyptic number.

42526478 is a deficient number, since it is larger than the sum of its proper divisors (21263242).

42526478 is a wasteful number, since it uses less digits than its factorization.

42526478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21263241.

The product of its digits is 107520, while the sum is 38.

The square root of 42526478 is about 6521.2328589002. The cubic root of 42526478 is about 349.0490594766.

The spelling of 42526478 in words is "forty-two million, five hundred twenty-six thousand, four hundred seventy-eight".