164435042 has 4 divisors (see below), whose sum is σ = 246652566. Its totient is φ = 82217520.

The previous prime is 164435021. The next prime is 164435057. The reversal of 164435042 is 240534461.

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., 151265401 + 13169641 = 12299^2 + 3629^2 .

It is a super-3 number, since 3×164435042³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164434996 and 164435014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41108759 + ... + 41108762.

Almost surely, 2^164435042 is an apocalyptic number.

164435042 is a deficient number, since it is larger than the sum of its proper divisors (82217524).

164435042 is an equidigital number, since it uses as much as digits as its factorization.

164435042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82217523.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 164435042 is about 12823.2227618489. Note that the first 3 decimals coincide. The cubic root of 164435042 is about 547.8539423739.

The spelling of 164435042 in words is "one hundred sixty-four million, four hundred thirty-five thousand, forty-two".