42877780 has 24 divisors (see below), whose sum is σ = 98229600. Its totient is φ = 15591840.

The previous prime is 42877777. The next prime is 42877801. The reversal of 42877780 is 8777824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97230 + ... + 97669.

It is an arithmetic number, because the mean of its divisors is an integer number (4092900).

Almost surely, 2^42877780 is an apocalyptic number.

It is an amenable number.

42877780 is an abundant number, since it is smaller than the sum of its proper divisors (55351820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42877780 is a wasteful number, since it uses less digits than its factorization.

42877780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194919 (or 194917 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 43.

The square root of 42877780 is about 6548.1127051999. The cubic root of 42877780 is about 350.0075644624.

The spelling of 42877780 in words is "forty-two million, eight hundred seventy-seven thousand, seven hundred eighty".