42387636 has 24 divisors (see below), whose sum is σ = 99086400. Its totient is φ = 14103232.

The previous prime is 42387629. The next prime is 42387649. The reversal of 42387636 is 63678324.

It is a junction number, because it is equal to n+sod(n) for n = 42387594 and 42387603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4240 + ... + 10136.

It is an arithmetic number, because the mean of its divisors is an integer number (4128600).

Almost surely, 2^42387636 is an apocalyptic number.

It is an amenable number.

42387636 is an abundant number, since it is smaller than the sum of its proper divisors (56698764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42387636 is a wasteful number, since it uses less digits than its factorization.

42387636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503 (or 6501 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 42387636 is about 6510.5787761151. The cubic root of 42387636 is about 348.6687826188.

The spelling of 42387636 in words is "forty-two million, three hundred eighty-seven thousand, six hundred thirty-six".