42577887 has 16 divisors (see below), whose sum is σ = 64068480. Its totient is φ = 24914400.

The previous prime is 42577823. The next prime is 42577891. The reversal of 42577887 is 78877524.

It is a happy number.

It is not a de Polignac number, because 42577887 - 2⁶ = 42577823 is a prime.

It is a super-2 number, since 2×42577887² = 3625752922769538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42577387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21289 + ... + 23202.

It is an arithmetic number, because the mean of its divisors is an integer number (4004280).

Almost surely, 2^42577887 is an apocalyptic number.

42577887 is a deficient number, since it is larger than the sum of its proper divisors (21490593).

42577887 is a wasteful number, since it uses less digits than its factorization.

42577887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44534.

The product of its digits is 878080, while the sum is 48.

The square root of 42577887 is about 6525.1733310311. The cubic root of 42577887 is about 349.1896545288.

The spelling of 42577887 in words is "forty-two million, five hundred seventy-seven thousand, eight hundred eighty-seven".