164662042 has 4 divisors (see below), whose sum is σ = 246993066. Its totient is φ = 82331020.

The previous prime is 164662033. The next prime is 164662067. The reversal of 164662042 is 240266461.

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., 102394161 + 62267881 = 10119^2 + 7891^2 .

It is a super-2 number, since 2×164662042² = 54227176151219528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164661995 and 164662013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41165509 + ... + 41165512.

Almost surely, 2^164662042 is an apocalyptic number.

164662042 is a deficient number, since it is larger than the sum of its proper divisors (82331024).

164662042 is an equidigital number, since it uses as much as digits as its factorization.

164662042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82331023.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 164662042 is about 12832.0708383331. The cubic root of 164662042 is about 548.1059277177.

The spelling of 164662042 in words is "one hundred sixty-four million, six hundred sixty-two thousand, forty-two".