165420004 has 12 divisors (see below), whose sum is σ = 304721200. Its totient is φ = 78356808.

The previous prime is 165419993. The next prime is 165420037. The reversal of 165420004 is 400024561.

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, 1088214 + ... + 1088365.

Almost surely, 2^165420004 is an apocalyptic number.

It is an amenable number.

165420004 is a deficient number, since it is larger than the sum of its proper divisors (139301196).

165420004 is a wasteful number, since it uses less digits than its factorization.

165420004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176602 (or 2176600 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 165420004 is about 12861.5708216376. The cubic root of 165420004 is about 548.9456428853.

Adding to 165420004 its reverse (400024561), we get a palindrome (565444565).

The spelling of 165420004 in words is "one hundred sixty-five million, four hundred twenty thousand, four".