42320412 has 36 divisors (see below), whose sum is σ = 113270976. Its totient is φ = 13276800.

The previous prime is 42320401. The next prime is 42320419. The reversal of 42320412 is 21402324.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42320419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33964 + ... + 35187.

It is an arithmetic number, because the mean of its divisors is an integer number (3146416).

Almost surely, 2^42320412 is an apocalyptic number.

It is an amenable number.

42320412 is an abundant number, since it is smaller than the sum of its proper divisors (70950564).

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

42320412 is a wasteful number, since it uses less digits than its factorization.

42320412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69178 (or 69173 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42320412 is about 6505.4140529255. The cubic root of 42320412 is about 348.4843631808.

Adding to 42320412 its reverse (21402324), we get a palindrome (63722736).

The spelling of 42320412 in words is "forty-two million, three hundred twenty thousand, four hundred twelve".