42319836 has 72 divisors (see below), whose sum is σ = 118961024. Its totient is φ = 12597120.

The previous prime is 42319819. The next prime is 42319843. The reversal of 42319836 is 63891324.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42319836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13050 + ... + 15966.

Almost surely, 2^42319836 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 42319836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59480512).

42319836 is an abundant number, since it is smaller than the sum of its proper divisors (76641188).

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

42319836 is a wasteful number, since it uses less digits than its factorization.

42319836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971 (or 2966 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 42319836 is about 6505.3697819571. The cubic root of 42319836 is about 348.4827821635.

The spelling of 42319836 in words is "forty-two million, three hundred nineteen thousand, eight hundred thirty-six".