42320146 has 16 divisors (see below), whose sum is σ = 71486208. Its totient is φ = 18615600.

The previous prime is 42320143. The next prime is 42320203. The reversal of 42320146 is 64102324.

It is a happy number.

It is a super-2 number, since 2×42320146² = 3581989514922632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (42320141) 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, 30345 + ... + 31708.

It is an arithmetic number, because the mean of its divisors is an integer number (4467888).

Almost surely, 2^42320146 is an apocalyptic number.

42320146 is a deficient number, since it is larger than the sum of its proper divisors (29166062).

42320146 is a wasteful number, since it uses less digits than its factorization.

42320146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62097.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 42320146 is about 6505.3936083837. The cubic root of 42320146 is about 348.4836330600.

The spelling of 42320146 in words is "forty-two million, three hundred twenty thousand, one hundred forty-six".