42887505 has 16 divisors (see below), whose sum is σ = 69007680. Its totient is φ = 22744128.

The previous prime is 42887489. The next prime is 42887521. The reversal of 42887505 is 50578824.

It is an interprime number because it is at equal distance from previous prime (42887489) and next prime (42887521).

It is not a de Polignac number, because 42887505 - 2⁴ = 42887489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5302 + ... + 10671.

It is an arithmetic number, because the mean of its divisors is an integer number (4312980).

Almost surely, 2^42887505 is an apocalyptic number.

It is an amenable number.

42887505 is a deficient number, since it is larger than the sum of its proper divisors (26120175).

42887505 is a wasteful number, since it uses less digits than its factorization.

42887505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16160.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 42887505 is about 6548.8552434758. The cubic root of 42887505 is about 350.0340239033.

The spelling of 42887505 in words is "forty-two million, eight hundred eighty-seven thousand, five hundred five".