164171542 has 4 divisors (see below), whose sum is σ = 246257316. Its totient is φ = 82085770.

The previous prime is 164171537. The next prime is 164171543. The reversal of 164171542 is 245171461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245171461 = 929 ⋅263909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164171543) 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 as a sum of consecutive naturals, namely, 41042884 + ... + 41042887.

It is an arithmetic number, because the mean of its divisors is an integer number (61564329).

Almost surely, 2^164171542 is an apocalyptic number.

164171542 is a deficient number, since it is larger than the sum of its proper divisors (82085774).

164171542 is an equidigital number, since it uses as much as digits as its factorization.

164171542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82085773.

The product of its digits is 6720, while the sum is 31.

The square root of 164171542 is about 12812.9443142472. The cubic root of 164171542 is about 547.5611485534.

The spelling of 164171542 in words is "one hundred sixty-four million, one hundred seventy-one thousand, five hundred forty-two".