42215022 has 12 divisors (see below), whose sum is σ = 91465920. Its totient is φ = 14071668.

The previous prime is 42215003. The next prime is 42215023. The reversal of 42215022 is 22051224.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2345279 = 42215022 / (4 + 2 + 2 + 1 + 5 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 42214986 and 42215004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42215023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172622 + ... + 1172657.

It is an arithmetic number, because the mean of its divisors is an integer number (7622160).

Almost surely, 2^42215022 is an apocalyptic number.

42215022 is an abundant number, since it is smaller than the sum of its proper divisors (49250898).

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

42215022 is a wasteful number, since it uses less digits than its factorization.

42215022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345287 (or 2345284 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 42215022 is about 6497.3088275070. The cubic root of 42215022 is about 348.1948472846.

Adding to 42215022 its reverse (22051224), we get a palindrome (64266246).

The spelling of 42215022 in words is "forty-two million, two hundred fifteen thousand, twenty-two".