42776916 has 96 divisors (see below), whose sum is σ = 125841408. Its totient is φ = 11007360.

The previous prime is 42776897. The next prime is 42776917. The reversal of 42776916 is 61967724.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42776917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46501 + ... + 47411.

It is an arithmetic number, because the mean of its divisors is an integer number (1310848).

Almost surely, 2^42776916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42776916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62920704).

42776916 is an abundant number, since it is smaller than the sum of its proper divisors (83064492).

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

42776916 is a wasteful number, since it uses less digits than its factorization.

42776916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 979 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 42776916 is about 6540.4064093908. The cubic root of 42776916 is about 349.7329009798.

The spelling of 42776916 in words is "forty-two million, seven hundred seventy-six thousand, nine hundred sixteen".