42158484 has 18 divisors (see below), whose sum is σ = 106567370. Its totient is φ = 14052816.

The previous prime is 42158443. The next prime is 42158491. The reversal of 42158484 is 48485124.

It can be written as a sum of positive squares in only one way, i.e., 35283600 + 6874884 = 5940^2 + 2622^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1171069 = 42158484 / (4 + 2 + 1 + 5 + 8 + 4 + 8 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 585499 + ... + 585570.

Almost surely, 2^42158484 is an apocalyptic number.

It is an amenable number.

42158484 is an abundant number, since it is smaller than the sum of its proper divisors (64408886).

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

42158484 is a wasteful number, since it uses less digits than its factorization.

42158484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171079 (or 1171074 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 42158484 is about 6492.9564914606. The cubic root of 42158484 is about 348.0393336436.

The spelling of 42158484 in words is "forty-two million, one hundred fifty-eight thousand, four hundred eighty-four".