42212320 has 24 divisors (see below), whose sum is σ = 99726984. Its totient is φ = 16884864.

The previous prime is 42212299. The next prime is 42212333. The reversal of 42212320 is 2321224.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 42212294 and 42212303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131754 + ... + 132073.

It is an arithmetic number, because the mean of its divisors is an integer number (4155291).

Almost surely, 2^42212320 is an apocalyptic number.

42212320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42212320 is an abundant number, since it is smaller than the sum of its proper divisors (57514664).

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

42212320 is a wasteful number, since it uses less digits than its factorization.

42212320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263842 (or 263834 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 42212320 is about 6497.1008919363. The cubic root of 42212320 is about 348.1874183134.

Adding to 42212320 its reverse (2321224), we get a palindrome (44533544).

The spelling of 42212320 in words is "forty-two million, two hundred twelve thousand, three hundred twenty".