164311442 has 4 divisors (see below), whose sum is σ = 246467166. Its totient is φ = 82155720.

The previous prime is 164311429. The next prime is 164311463. The reversal of 164311442 is 244113461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 108972721 + 55338721 = 10439^2 + 7439^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 41077859 + ... + 41077862.

Almost surely, 2^164311442 is an apocalyptic number.

164311442 is a deficient number, since it is larger than the sum of its proper divisors (82155724).

164311442 is an equidigital number, since it uses as much as digits as its factorization.

164311442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82155723.

The product of its digits is 2304, while the sum is 26.

The square root of 164311442 is about 12818.4024745676. The cubic root of 164311442 is about 547.7166404951.

The spelling of 164311442 in words is "one hundred sixty-four million, three hundred eleven thousand, four hundred forty-two".