164445242 has 32 divisors (see below), whose sum is σ = 274512000. Its totient is φ = 73389888.

The previous prime is 164445241. The next prime is 164445277. The reversal of 164445242 is 242544461.

It is a junction number, because it is equal to n+sod(n) for n = 164445199 and 164445208.

It is not an unprimeable number, because it can be changed into a prime (164445241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191009 + ... + 191867.

It is an arithmetic number, because the mean of its divisors is an integer number (8578500).

Almost surely, 2^164445242 is an apocalyptic number.

164445242 is a deficient number, since it is larger than the sum of its proper divisors (110066758).

164445242 is a wasteful number, since it uses less digits than its factorization.

164445242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110.

The product of its digits is 30720, while the sum is 32.

The square root of 164445242 is about 12823.6204716141. The cubic root of 164445242 is about 547.8652700378.

The spelling of 164445242 in words is "one hundred sixty-four million, four hundred forty-five thousand, two hundred forty-two".