42787340 has 12 divisors (see below), whose sum is σ = 89853456. Its totient is φ = 17114928.

The previous prime is 42787309. The next prime is 42787357. The reversal of 42787340 is 4378724.

It is a self number, because there is not a number n which added to its sum of digits gives 42787340.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069664 + ... + 1069703.

It is an arithmetic number, because the mean of its divisors is an integer number (7487788).

Almost surely, 2^42787340 is an apocalyptic number.

It is an amenable number.

42787340 is an abundant number, since it is smaller than the sum of its proper divisors (47066116).

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

42787340 is a wasteful number, since it uses less digits than its factorization.

42787340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139376 (or 2139374 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 42787340 is about 6541.2032532249. The cubic root of 42787340 is about 349.7613066404.

The spelling of 42787340 in words is "forty-two million, seven hundred eighty-seven thousand, three hundred forty".