165862542 has 32 divisors (see below), whose sum is σ = 343867680. Its totient is φ = 53271680.

The previous prime is 165862537. The next prime is 165862547. The reversal of 165862542 is 245268561.

It is an interprime number because it is at equal distance from previous prime (165862537) and next prime (165862547).

It is a self number, because there is not a number n which added to its sum of digits gives 165862542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165862547) 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, 163228 + ... + 164240.

It is an arithmetic number, because the mean of its divisors is an integer number (10745865).

Almost surely, 2^165862542 is an apocalyptic number.

165862542 is an abundant number, since it is smaller than the sum of its proper divisors (178005138).

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

165862542 is a wasteful number, since it uses less digits than its factorization.

165862542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988.

The product of its digits is 115200, while the sum is 39.

The square root of 165862542 is about 12878.7632170174. The cubic root of 165862542 is about 549.4347272183.

The spelling of 165862542 in words is "one hundred sixty-five million, eight hundred sixty-two thousand, five hundred forty-two".