165102442 has 4 divisors (see below), whose sum is σ = 247653666. Its totient is φ = 82551220.

The previous prime is 165102433. The next prime is 165102461. The reversal of 165102442 is 244201561.

It is a happy number.

165102442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244201561 = 79 ⋅3091159.

It can be written as a sum of positive squares in only one way, i.e., 93683041 + 71419401 = 9679^2 + 8451^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41275609 + ... + 41275612.

Almost surely, 2^165102442 is an apocalyptic number.

165102442 is a deficient number, since it is larger than the sum of its proper divisors (82551224).

165102442 is an equidigital number, since it uses as much as digits as its factorization.

165102442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82551223.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 165102442 is about 12849.2195093710. The cubic root of 165102442 is about 548.5941417707.

The spelling of 165102442 in words is "one hundred sixty-five million, one hundred two thousand, four hundred forty-two".