42672987 has 24 divisors (see below), whose sum is σ = 73056256. Its totient is φ = 24383592.

The previous prime is 42672979. The next prime is 42673021. The reversal of 42672987 is 78927624.

42672987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42672987 - 2³ = 42672979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42672187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10843 + ... + 14244.

Almost surely, 2^42672987 is an apocalyptic number.

42672987 is a deficient number, since it is larger than the sum of its proper divisors (30383269).

42672987 is an equidigital number, since it uses as much as digits as its factorization.

42672987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25109 (or 25097 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 42672987 is about 6532.4564292462. The cubic root of 42672987 is about 349.4494391668.

The spelling of 42672987 in words is "forty-two million, six hundred seventy-two thousand, nine hundred eighty-seven".