164142401 has 4 divisors (see below), whose sum is σ = 165188052. Its totient is φ = 163096752.

The previous prime is 164142383. The next prime is 164142403. The reversal of 164142401 is 104241461.

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 2 ways, for example, as 62031376 + 102111025 = 7876^2 + 10105^2 .

It is a cyclic number.

It is not a de Polignac number, because 164142401 - 2¹⁰ = 164141377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164142403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522590 + ... + 522903.

It is an arithmetic number, because the mean of its divisors is an integer number (41297013).

Almost surely, 2^164142401 is an apocalyptic number.

It is an amenable number.

164142401 is a deficient number, since it is larger than the sum of its proper divisors (1045651).

164142401 is a wasteful number, since it uses less digits than its factorization.

164142401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045650.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 164142401 is about 12811.8070934588. The cubic root of 164142401 is about 547.5287486555.

Adding to 164142401 its reverse (104241461), we get a palindrome (268383862).

The spelling of 164142401 in words is "one hundred sixty-four million, one hundred forty-two thousand, four hundred one".