42636242 has 8 divisors (see below), whose sum is σ = 69768432. Its totient is φ = 19380100.

The previous prime is 42636239. The next prime is 42636257. The reversal of 42636242 is 24263624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968984 + ... + 969027.

It is an arithmetic number, because the mean of its divisors is an integer number (8721054).

Almost surely, 2^42636242 is an apocalyptic number.

42636242 is a deficient number, since it is larger than the sum of its proper divisors (27132190).

42636242 is a wasteful number, since it uses less digits than its factorization.

42636242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938024.

The product of its digits is 13824, while the sum is 29.

The square root of 42636242 is about 6529.6433286972. The cubic root of 42636242 is about 349.3491086619.

Adding to 42636242 its reverse (24263624), we get a palindrome (66899866).

The spelling of 42636242 in words is "forty-two million, six hundred thirty-six thousand, two hundred forty-two".