42387760 has 20 divisors (see below), whose sum is σ = 98551728. Its totient is φ = 16955072.

The previous prime is 42387743. The next prime is 42387799. The reversal of 42387760 is 6778324.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264844 + ... + 265003.

Almost surely, 2^42387760 is an apocalyptic number.

42387760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42387760 is an abundant number, since it is smaller than the sum of its proper divisors (56163968).

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

42387760 is a wasteful number, since it uses less digits than its factorization.

42387760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529860 (or 529854 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 42387760 is about 6510.5882990710. The cubic root of 42387760 is about 348.6691226148.

The spelling of 42387760 in words is "forty-two million, three hundred eighty-seven thousand, seven hundred sixty".