42776487 has 12 divisors (see below), whose sum is σ = 66541384. Its totient is φ = 26323920.

The previous prime is 42776417. The next prime is 42776491. The reversal of 42776487 is 78467724.

It is not a de Polignac number, because 42776487 - 2⁷ = 42776359 is a prime.

It is a super-2 number, since 2×42776487² = 3659655680122338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42776417) 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, 182689 + ... + 182922.

Almost surely, 2^42776487 is an apocalyptic number.

42776487 is a deficient number, since it is larger than the sum of its proper divisors (23764897).

42776487 is a wasteful number, since it uses less digits than its factorization.

42776487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365630 (or 365627 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 42776487 is about 6540.3736131814. The cubic root of 42776487 is about 349.7317318452.

The spelling of 42776487 in words is "forty-two million, seven hundred seventy-six thousand, four hundred eighty-seven".