42146784 has 48 divisors (see below), whose sum is σ = 122930640. Its totient is φ = 14048640.

The previous prime is 42146759. The next prime is 42146801. The reversal of 42146784 is 48764124.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23527 + ... + 25254.

It is an arithmetic number, because the mean of its divisors is an integer number (2561055).

Almost surely, 2^42146784 is an apocalyptic number.

It is an amenable number.

42146784 is an abundant number, since it is smaller than the sum of its proper divisors (80783856).

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

42146784 is a wasteful number, since it uses less digits than its factorization.

42146784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48800 (or 48786 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 42146784 is about 6492.0554526282. The cubic root of 42146784 is about 348.0071342176.

The spelling of 42146784 in words is "forty-two million, one hundred forty-six thousand, seven hundred eighty-four".