42316420 has 36 divisors (see below), whose sum is σ = 93803724. Its totient is φ = 16032960.

The previous prime is 42316409. The next prime is 42316433. The reversal of 42316420 is 2461324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17156164 + 25160256 = 4142^2 + 5016^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42316391 and 42316400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4290 + ... + 10150.

It is an arithmetic number, because the mean of its divisors is an integer number (2605659).

Almost surely, 2^42316420 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 42316420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46901862).

42316420 is an abundant number, since it is smaller than the sum of its proper divisors (51487304).

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

42316420 is a wasteful number, since it uses less digits than its factorization.

42316420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5908 (or 5887 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 42316420 is about 6505.1072243277. The cubic root of 42316420 is about 348.4734055581.

Adding to 42316420 its reverse (2461324), we get a palindrome (44777744).

The spelling of 42316420 in words is "forty-two million, three hundred sixteen thousand, four hundred twenty".