164422642 has 8 divisors (see below), whose sum is σ = 251287596. Its totient is φ = 80660112.

The previous prime is 164422631. The next prime is 164422651. The reversal of 164422642 is 246224461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 153983281 + 10439361 = 12409^2 + 3231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×164422642³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775473 + ... + 775684.

Almost surely, 2^164422642 is an apocalyptic number.

164422642 is a deficient number, since it is larger than the sum of its proper divisors (86864954).

164422642 is a wasteful number, since it uses less digits than its factorization.

164422642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551212.

The product of its digits is 18432, while the sum is 31.

The square root of 164422642 is about 12822.7392549330. The cubic root of 164422642 is about 547.8401708574.

The spelling of 164422642 in words is "one hundred sixty-four million, four hundred twenty-two thousand, six hundred forty-two".