42828487 has 6 divisors (see below), whose sum is σ = 46376592. Its totient is φ = 39533832.

The previous prime is 42828481. The next prime is 42828493. The reversal of 42828487 is 78482824.

It is an interprime number because it is at equal distance from previous prime (42828481) and next prime (42828493).

It is not a de Polignac number, because 42828487 - 2¹⁵ = 42795719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42828481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126543 + ... + 126880.

It is an arithmetic number, because the mean of its divisors is an integer number (7729432).

Almost surely, 2^42828487 is an apocalyptic number.

42828487 is a deficient number, since it is larger than the sum of its proper divisors (3548105).

42828487 is a wasteful number, since it uses less digits than its factorization.

42828487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253449 (or 253436 counting only the distinct ones).

The product of its digits is 229376, while the sum is 43.

The square root of 42828487 is about 6544.3477138673. The cubic root of 42828487 is about 349.8733882176.

It can be divided in two parts, 4282 and 8487, that added together give a square (12769 = 113²).

The spelling of 42828487 in words is "forty-two million, eight hundred twenty-eight thousand, four hundred eighty-seven".