42278705 has 16 divisors (see below), whose sum is σ = 61034880. Its totient is φ = 27464832.

The previous prime is 42278693. The next prime is 42278737. The reversal of 42278705 is 50787224.

It is a cyclic number.

It is not a de Polignac number, because 42278705 - 2⁴ = 42278689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 31124 + ... + 32453.

It is an arithmetic number, because the mean of its divisors is an integer number (3814680).

Almost surely, 2^42278705 is an apocalyptic number.

It is an amenable number.

42278705 is a deficient number, since it is larger than the sum of its proper divisors (18756175).

42278705 is a wasteful number, since it uses less digits than its factorization.

42278705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63608.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 42278705 is about 6502.2077020040. The cubic root of 42278705 is about 348.3698477985.

The spelling of 42278705 in words is "forty-two million, two hundred seventy-eight thousand, seven hundred five".