165247442 has 8 divisors (see below), whose sum is σ = 247926396. Its totient is φ = 82605312.

The previous prime is 165247403. The next prime is 165247451. The reversal of 165247442 is 244742561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 164121721 + 1125721 = 12811^2 + 1061^2 .

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, 10178 + ... + 20834.

Almost surely, 2^165247442 is an apocalyptic number.

165247442 is a deficient number, since it is larger than the sum of its proper divisors (82678954).

165247442 is a wasteful number, since it uses less digits than its factorization.

165247442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18412.

The product of its digits is 53760, while the sum is 35.

The square root of 165247442 is about 12854.8606371287. The cubic root of 165247442 is about 548.7546943626.

It can be divided in two parts, 1652 and 47442, that added together give a palindrome (49094).

The spelling of 165247442 in words is "one hundred sixty-five million, two hundred forty-seven thousand, four hundred forty-two".