42086636 has 6 divisors (see below), whose sum is σ = 73651620. Its totient is φ = 21043316.

The previous prime is 42086633. The next prime is 42086669. The reversal of 42086636 is 63668024.

It is a junction number, because it is equal to n+sod(n) for n = 42086596 and 42086605.

It is not an unprimeable number, because it can be changed into a prime (42086633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260826 + ... + 5260833.

It is an arithmetic number, because the mean of its divisors is an integer number (12275270).

Almost surely, 2^42086636 is an apocalyptic number.

It is an amenable number.

42086636 is a deficient number, since it is larger than the sum of its proper divisors (31564984).

42086636 is a wasteful number, since it uses less digits than its factorization.

42086636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10521663 (or 10521661 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 42086636 is about 6487.4213675389. The cubic root of 42086636 is about 347.8415075165.

The spelling of 42086636 in words is "forty-two million, eighty-six thousand, six hundred thirty-six".