42897783 has 16 divisors (see below), whose sum is σ = 63196416. Its totient is φ = 25745280.

The previous prime is 42897781. The next prime is 42897787. The reversal of 42897783 is 38779824.

It is not a de Polignac number, because 42897783 - 2¹ = 42897781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42897781) 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, 17113 + ... + 19458.

It is an arithmetic number, because the mean of its divisors is an integer number (3949776).

Almost surely, 2^42897783 is an apocalyptic number.

42897783 is a deficient number, since it is larger than the sum of its proper divisors (20298633).

42897783 is a wasteful number, since it uses less digits than its factorization.

42897783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36614.

The product of its digits is 677376, while the sum is 48.

The square root of 42897783 is about 6549.6399137663. The cubic root of 42897783 is about 350.0619835801.

The spelling of 42897783 in words is "forty-two million, eight hundred ninety-seven thousand, seven hundred eighty-three".