Search a number
164942 = 282471
BaseRepresentation
bin101000010001001110
322101020222
4220101032
520234232
63311342
71254611
oct502116
9271228
10164942
11102a18
127b552
135a0cb
1444178
1533d12
hex2844e

164942 has 4 divisors (see below), whose sum is σ = 247416. Its totient is φ = 82470.

The previous prime is 164911. The next prime is 164953. The reversal of 164942 is 249461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249461 = 313797.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41234 + ... + 41237.

It is an arithmetic number, because the mean of its divisors is an integer number (61854).

2164942 is an apocalyptic number.

164942 is a deficient number, since it is larger than the sum of its proper divisors (82474).

164942 is an equidigital number, since it uses as much as digits as its factorization.

164942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82473.

The product of its digits is 1728, while the sum is 26.

The square root of 164942 is about 406.1305208920. The cubic root of 164942 is about 54.8416381291.

The spelling of 164942 in words is "one hundred sixty-four thousand, nine hundred forty-two".

Divisors: 1 2 82471 164942