164240442 has 24 divisors (see below), whose sum is σ = 356200416. Its totient is φ = 54693576.

The previous prime is 164240441. The next prime is 164240473. The reversal of 164240442 is 244042461.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (164240441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17523 + ... + 25209.

It is an arithmetic number, because the mean of its divisors is an integer number (14841684).

Almost surely, 2^164240442 is an apocalyptic number.

164240442 is an abundant number, since it is smaller than the sum of its proper divisors (191959974).

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

164240442 is a wasteful number, since it uses less digits than its factorization.

164240442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8882 (or 8879 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 164240442 is about 12815.6327194563. The cubic root of 164240442 is about 547.6377385359.

The spelling of 164240442 in words is "one hundred sixty-four million, two hundred forty thousand, four hundred forty-two".