42006736 has 20 divisors (see below), whose sum is σ = 84014464. Its totient is φ = 20325600.

The previous prime is 42006721. The next prime is 42006737. The reversal of 42006736 is 63760024.

42006736 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42006737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41850 + ... + 42841.

Almost surely, 2^42006736 is an apocalyptic number.

It is an amenable number.

42006736 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42006736 is a wasteful number, since it uses less digits than its factorization.

42006736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84730 (or 84724 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 42006736 is about 6481.2603712550. The cubic root of 42006736 is about 347.6212464441.

The spelling of 42006736 in words is "forty-two million, six thousand, seven hundred thirty-six".