42487905 has 8 divisors (see below), whose sum is σ = 67980672. Its totient is φ = 22660208.

The previous prime is 42487901. The next prime is 42487919. The reversal of 42487905 is 50978424.

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

It is a cyclic number.

It is not a de Polignac number, because 42487905 - 2² = 42487901 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42487901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1416249 + ... + 1416278.

It is an arithmetic number, because the mean of its divisors is an integer number (8497584).

Almost surely, 2^42487905 is an apocalyptic number.

It is an amenable number.

42487905 is a deficient number, since it is larger than the sum of its proper divisors (25492767).

42487905 is a wasteful number, since it uses less digits than its factorization.

42487905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832535.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 42487905 is about 6518.2746950401. The cubic root of 42487905 is about 348.9434943261.

The spelling of 42487905 in words is "forty-two million, four hundred eighty-seven thousand, nine hundred five".