42012022 has 8 divisors (see below), whose sum is σ = 67865616. Its totient is φ = 19390152.

The previous prime is 42012017. The next prime is 42012073. The reversal of 42012022 is 22021024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 42011993 and 42012011.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 807898 + ... + 807949.

It is an arithmetic number, because the mean of its divisors is an integer number (8483202).

Almost surely, 2^42012022 is an apocalyptic number.

42012022 is a deficient number, since it is larger than the sum of its proper divisors (25853594).

42012022 is a wasteful number, since it uses less digits than its factorization.

42012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615862.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 42012022 is about 6481.6681494813. The cubic root of 42012022 is about 347.6358270329.

Adding to 42012022 its reverse (22021024), we get a palindrome (64033046).

The spelling of 42012022 in words is "forty-two million, twelve thousand, twenty-two".