42738705 has 16 divisors (see below), whose sum is σ = 75980160. Its totient is φ = 22793904.

The previous prime is 42738667. The next prime is 42738719. The reversal of 42738705 is 50783724.

42738705 = 431² + 432² + ... + 592².

It is not a de Polignac number, because 42738705 - 2¹⁴ = 42722321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42738705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158157 + ... + 158426.

It is an arithmetic number, because the mean of its divisors is an integer number (4748760).

Almost surely, 2^42738705 is an apocalyptic number.

42738705 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42738705 is a deficient number, since it is larger than the sum of its proper divisors (33241455).

42738705 is a wasteful number, since it uses less digits than its factorization.

42738705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316597 (or 316591 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 42738705 is about 6537.4846080125. The cubic root of 42738705 is about 349.6287355702.

The spelling of 42738705 in words is "forty-two million, seven hundred thirty-eight thousand, seven hundred five".