42681705 has 16 divisors (see below), whose sum is σ = 74499264. Its totient is φ = 20694080.

The previous prime is 42681703. The next prime is 42681731. The reversal of 42681705 is 50718624.

It is not a de Polignac number, because 42681705 - 2¹ = 42681703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (42681701) 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, 129174 + ... + 129503.

It is an arithmetic number, because the mean of its divisors is an integer number (4656204).

Almost surely, 2^42681705 is an apocalyptic number.

It is an amenable number.

42681705 is a deficient number, since it is larger than the sum of its proper divisors (31817559).

42681705 is a wasteful number, since it uses less digits than its factorization.

42681705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258696.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 42681705 is about 6533.1236786089. The cubic root of 42681705 is about 349.4732348041.

The spelling of 42681705 in words is "forty-two million, six hundred eighty-one thousand, seven hundred five".