42777880 has 32 divisors (see below), whose sum is σ = 96447600. Its totient is φ = 17076096.

The previous prime is 42777877. The next prime is 42777881. The reversal of 42777880 is 8877724.

It is a super-3 number, since 3×42777880³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42777881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28591 + ... + 30049.

Almost surely, 2^42777880 is an apocalyptic number.

42777880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42777880 is an abundant number, since it is smaller than the sum of its proper divisors (53669720).

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

42777880 is a wasteful number, since it uses less digits than its factorization.

42777880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203 (or 2199 counting only the distinct ones).

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

The square root of 42777880 is about 6540.4801047018. The cubic root of 42777880 is about 349.7355280975.

The spelling of 42777880 in words is "forty-two million, seven hundred seventy-seven thousand, eight hundred eighty".