42788511 has 24 divisors (see below), whose sum is σ = 63931920. Its totient is φ = 27561600.

The previous prime is 42788491. The next prime is 42788519. The reversal of 42788511 is 11588724.

It is not a de Polignac number, because 42788511 - 2⁹ = 42787999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42788519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31731 + ... + 33051.

It is an arithmetic number, because the mean of its divisors is an integer number (2663830).

Almost surely, 2^42788511 is an apocalyptic number.

42788511 is a deficient number, since it is larger than the sum of its proper divisors (21143409).

42788511 is a wasteful number, since it uses less digits than its factorization.

42788511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447 (or 1444 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 42788511 is about 6541.2927621381. The cubic root of 42788511 is about 349.7644973564.

The spelling of 42788511 in words is "forty-two million, seven hundred eighty-eight thousand, five hundred eleven".