42946222 has 16 divisors (see below), whose sum is σ = 72543744. Its totient is φ = 18891000.

The previous prime is 42946219. The next prime is 42946223. The reversal of 42946222 is 22264924.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42946223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30804 + ... + 32167.

It is an arithmetic number, because the mean of its divisors is an integer number (4533984).

Almost surely, 2^42946222 is an apocalyptic number.

42946222 is a deficient number, since it is larger than the sum of its proper divisors (29597522).

42946222 is a wasteful number, since it uses less digits than its factorization.

42946222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63015.

The product of its digits is 13824, while the sum is 31.

The square root of 42946222 is about 6553.3367073576. The cubic root of 42946222 is about 350.1936941481.

The spelling of 42946222 in words is "forty-two million, nine hundred forty-six thousand, two hundred twenty-two".