164021234 has 16 divisors (see below), whose sum is σ = 276478272. Its totient is φ = 72410448.

The previous prime is 164021233. The next prime is 164021237. The reversal of 164021234 is 432120461.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (164021233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136544 + ... + 137739.

It is an arithmetic number, because the mean of its divisors is an integer number (17279892).

Almost surely, 2^164021234 is an apocalyptic number.

164021234 is a deficient number, since it is larger than the sum of its proper divisors (112457038).

164021234 is a wasteful number, since it uses less digits than its factorization.

164021234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274321.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 164021234 is about 12807.0774964470. The cubic root of 164021234 is about 547.3939901644.

Adding to 164021234 its reverse (432120461), we get a palindrome (596141695).

The spelling of 164021234 in words is "one hundred sixty-four million, twenty-one thousand, two hundred thirty-four".