42009996 has 24 divisors (see below), whose sum is σ = 112026880. Its totient is φ = 12002832.

The previous prime is 42009971. The next prime is 42010013. The reversal of 42009996 is 69990024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249976 + ... + 250143.

Almost surely, 2^42009996 is an apocalyptic number.

It is an amenable number.

42009996 is an abundant number, since it is smaller than the sum of its proper divisors (70016884).

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

42009996 is a wasteful number, since it uses less digits than its factorization.

42009996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500133 (or 500131 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 42009996 is about 6481.5118606695. The cubic root of 42009996 is about 347.6302387792.

It can be divided in two parts, 4200 and 9996, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 42009996 in words is "forty-two million, nine thousand, nine hundred ninety-six".