42842686 has 16 divisors (see below), whose sum is σ = 70392240. Its totient is φ = 19465600.

The previous prime is 42842647. The next prime is 42842687. The reversal of 42842686 is 68624824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42842687) 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, 20740 + ... + 22711.

It is an arithmetic number, because the mean of its divisors is an integer number (4399515).

Almost surely, 2^42842686 is an apocalyptic number.

42842686 is a deficient number, since it is larger than the sum of its proper divisors (27549554).

42842686 is a wasteful number, since it uses less digits than its factorization.

42842686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43499.

The product of its digits is 147456, while the sum is 40.

The square root of 42842686 is about 6545.4324532455. The cubic root of 42842686 is about 349.9120486489.

The spelling of 42842686 in words is "forty-two million, eight hundred forty-two thousand, six hundred eighty-six".