42145704 has 64 divisors (see below), whose sum is σ = 119952000. Its totient is φ = 13703040.

The previous prime is 42145679. The next prime is 42145711. The reversal of 42145704 is 40754124.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 6477 + ... + 11235.

It is an arithmetic number, because the mean of its divisors is an integer number (1874250).

Almost surely, 2^42145704 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 42145704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59976000).

42145704 is an abundant number, since it is smaller than the sum of its proper divisors (77806296).

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

42145704 is a wasteful number, since it uses less digits than its factorization.

42145704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815 (or 4805 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 42145704 is about 6491.9722735083. The cubic root of 42145704 is about 348.0041616625.

Adding to 42145704 its reverse (40754124), we get a palindrome (82899828).

It can be divided in two parts, 42145 and 704, that added together give a square (42849 = 207²).

The spelling of 42145704 in words is "forty-two million, one hundred forty-five thousand, seven hundred four".