42316820 has 48 divisors (see below), whose sum is σ = 109377408. Its totient is φ = 13392000.

The previous prime is 42316817. The next prime is 42316847. The reversal of 42316820 is 2861324.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 42316820.

It is a congruent number.

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, 9806 + ... + 13445.

It is an arithmetic number, because the mean of its divisors is an integer number (2278696).

Almost surely, 2^42316820 is an apocalyptic number.

It is an amenable number.

42316820 is an abundant number, since it is smaller than the sum of its proper divisors (67060588).

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

42316820 is a wasteful number, since it uses less digits than its factorization.

42316820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23280 (or 23278 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 42316820 is about 6505.1379693286. The cubic root of 42316820 is about 348.4745035473.

The spelling of 42316820 in words is "forty-two million, three hundred sixteen thousand, eight hundred twenty".