42687387 has 12 divisors (see below), whose sum is σ = 61725664. Its totient is φ = 28427760.

The previous prime is 42687377. The next prime is 42687397. The reversal of 42687387 is 78378624.

It is a happy number.

42687387 is a `hidden beast` number, since 4 + 268 + 7 + 387 = 666.

It is an interprime number because it is at equal distance from previous prime (42687377) and next prime (42687397).

It is not a de Polignac number, because 42687387 - 2⁸ = 42687131 is a prime.

It is a super-3 number, since 3×42687387³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42687377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9153 + ... + 13005.

Almost surely, 2^42687387 is an apocalyptic number.

42687387 is a deficient number, since it is larger than the sum of its proper divisors (19038277).

42687387 is a wasteful number, since it uses less digits than its factorization.

42687387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090 (or 5087 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 42687387 is about 6533.5585250306. The cubic root of 42687387 is about 349.4887419854.

The spelling of 42687387 in words is "forty-two million, six hundred eighty-seven thousand, three hundred eighty-seven".