42915744 has 72 divisors (see below), whose sum is σ = 126584640. Its totient is φ = 14302656.

The previous prime is 42915727. The next prime is 42915767. The reversal of 42915744 is 44751924.

It is a happy number.

42915744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×42915744² = 3683522166147072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 42915699 and 42915708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5017 + ... + 10535.

It is an arithmetic number, because the mean of its divisors is an integer number (1758120).

Almost surely, 2^42915744 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 42915744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63292320).

42915744 is an abundant number, since it is smaller than the sum of its proper divisors (83668896).

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

42915744 is an equidigital number, since it uses as much as digits as its factorization.

42915744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544 (or 5524 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 42915744 is about 6551.0109143551. The cubic root of 42915744 is about 350.1108329265.

It can be divided in two parts, 429157 and 44, that added together give a triangular number (429201 = T₉₂₆).

The spelling of 42915744 in words is "forty-two million, nine hundred fifteen thousand, seven hundred forty-four".