42081783 has 16 divisors (see below), whose sum is σ = 59993856. Its totient is φ = 26144640.

The previous prime is 42081773. The next prime is 42081791. The reversal of 42081783 is 38718024.

It is not a de Polignac number, because 42081783 - 2⁶ = 42081719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42081773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1248 + ... + 9258.

It is an arithmetic number, because the mean of its divisors is an integer number (3749616).

Almost surely, 2^42081783 is an apocalyptic number.

42081783 is a deficient number, since it is larger than the sum of its proper divisors (17912073).

42081783 is a wasteful number, since it uses less digits than its factorization.

42081783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8134.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 42081783 is about 6487.0473252474. The cubic root of 42081783 is about 347.8281371621.

The spelling of 42081783 in words is "forty-two million, eighty-one thousand, seven hundred eighty-three".