42787773 has 12 divisors (see below), whose sum is σ = 70633888. Its totient is φ = 24450120.

The previous prime is 42787763. The next prime is 42787777. The reversal of 42787773 is 37778724.

It is not a de Polignac number, because 42787773 - 2⁸ = 42787517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42787777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339523 + ... + 339648.

Almost surely, 2^42787773 is an apocalyptic number.

It is an amenable number.

42787773 is a deficient number, since it is larger than the sum of its proper divisors (27846115).

42787773 is a wasteful number, since it uses less digits than its factorization.

42787773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679184 (or 679181 counting only the distinct ones).

The product of its digits is 460992, while the sum is 45.

The square root of 42787773 is about 6541.2363510272. The cubic root of 42787773 is about 349.7624864764.

The spelling of 42787773 in words is "forty-two million, seven hundred eighty-seven thousand, seven hundred seventy-three".