165023402 has 8 divisors (see below), whose sum is σ = 247637412. Its totient is φ = 82477600.

The previous prime is 165023393. The next prime is 165023431. The reversal of 165023402 is 204320561.

165023402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 163609681 + 1413721 = 12791^2 + 1189^2 .

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

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, 10499 + ... + 20982.

Almost surely, 2^165023402 is an apocalyptic number.

165023402 is a deficient number, since it is larger than the sum of its proper divisors (82614010).

165023402 is a wasteful number, since it uses less digits than its factorization.

165023402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34104.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 165023402 is about 12846.1434679829. The cubic root of 165023402 is about 548.5065844100.

Adding to 165023402 its reverse (204320561), we get a palindrome (369343963).

It can be divided in two parts, 1650 and 23402, that added together give a palindrome (25052).

The spelling of 165023402 in words is "one hundred sixty-five million, twenty-three thousand, four hundred two".