42158436 has 48 divisors (see below), whose sum is σ = 106396416. Its totient is φ = 12941824.

The previous prime is 42158423. The next prime is 42158443. The reversal of 42158436 is 63485124.

It is a junction number, because it is equal to n+sod(n) for n = 42158397 and 42158406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7390 + ... + 11786.

It is an arithmetic number, because the mean of its divisors is an integer number (2216592).

Almost surely, 2^42158436 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 42158436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53198208).

42158436 is an abundant number, since it is smaller than the sum of its proper divisors (64237980).

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

42158436 is a wasteful number, since it uses less digits than its factorization.

42158436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468 (or 4466 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 42158436 is about 6492.9527951464. The cubic root of 42158436 is about 348.0392015556.

The spelling of 42158436 in words is "forty-two million, one hundred fifty-eight thousand, four hundred thirty-six".