165042426 has 32 divisors (see below), whose sum is σ = 351630720. Its totient is φ = 51462656.

The previous prime is 165042421. The next prime is 165042431. The reversal of 165042426 is 624240561.

It is an interprime number because it is at equal distance from previous prime (165042421) and next prime (165042431).

It is a junction number, because it is equal to n+sod(n) for n = 165042393 and 165042402.

It is not an unprimeable number, because it can be changed into a prime (165042421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12190 + ... + 21878.

It is an arithmetic number, because the mean of its divisors is an integer number (10988460).

Almost surely, 2^165042426 is an apocalyptic number.

165042426 is an abundant number, since it is smaller than the sum of its proper divisors (186588294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165042426 is a wasteful number, since it uses less digits than its factorization.

165042426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9878.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 165042426 is about 12846.8839023321. The cubic root of 165042426 is about 548.5276609930.

Adding to 165042426 its reverse (624240561), we get a palindrome (789282987).

The spelling of 165042426 in words is "one hundred sixty-five million, forty-two thousand, four hundred twenty-six".