42042783 has 8 divisors (see below), whose sum is σ = 56260528. Its totient is φ = 27926784.

The previous prime is 42042743. The next prime is 42042809. The reversal of 42042783 is 38724024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42042783 - 2⁶ = 42042719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42042783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42042703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24466 + ... + 26127.

It is an arithmetic number, because the mean of its divisors is an integer number (7032566).

Almost surely, 2^42042783 is an apocalyptic number.

42042783 is a deficient number, since it is larger than the sum of its proper divisors (14217745).

42042783 is a wasteful number, since it uses less digits than its factorization.

42042783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50873.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 42042783 is about 6484.0406383674. The cubic root of 42042783 is about 347.7206520924.

The spelling of 42042783 in words is "forty-two million, forty-two thousand, seven hundred eighty-three".