42737664 has 112 divisors (see below), whose sum is σ = 119530368. Its totient is φ = 13565952.

The previous prime is 42737647. The next prime is 42737671. The reversal of 42737664 is 46673724.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909289 + ... + 909335.

Almost surely, 2^42737664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42737664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59765184).

42737664 is an abundant number, since it is smaller than the sum of its proper divisors (76792704).

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

42737664 is an equidigital number, since it uses as much as digits as its factorization.

42737664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 89 counting only the distinct ones).

The product of its digits is 169344, while the sum is 39.

The square root of 42737664 is about 6537.4049897494. The cubic root of 42737664 is about 349.6258968750.

The spelling of 42737664 in words is "forty-two million, seven hundred thirty-seven thousand, six hundred sixty-four".