42045687 has 12 divisors (see below), whose sum is σ = 61107384. Its totient is φ = 27857520.

The previous prime is 42045677. The next prime is 42045697. The reversal of 42045687 is 78654024.

It is an interprime number because it is at equal distance from previous prime (42045677) and next prime (42045697).

It is not a de Polignac number, because 42045687 - 2⁴ = 42045671 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42045637) 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, 12864 + ... + 15797.

It is an arithmetic number, because the mean of its divisors is an integer number (5092282).

Almost surely, 2^42045687 is an apocalyptic number.

42045687 is a deficient number, since it is larger than the sum of its proper divisors (19061697).

42045687 is a wasteful number, since it uses less digits than its factorization.

42045687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28830 (or 28827 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 42045687 is about 6484.2645689392. The cubic root of 42045687 is about 347.7286578860.

The spelling of 42045687 in words is "forty-two million, forty-five thousand, six hundred eighty-seven".