165214442 has 4 divisors (see below), whose sum is σ = 247821666. Its totient is φ = 82607220.

The previous prime is 165214433. The next prime is 165214457. The reversal of 165214442 is 244412561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244412561 = 19 ⋅12863819.

It can be written as a sum of positive squares in only one way, i.e., 137851081 + 27363361 = 11741^2 + 5231^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41303609 + ... + 41303612.

Almost surely, 2^165214442 is an apocalyptic number.

165214442 is a deficient number, since it is larger than the sum of its proper divisors (82607224).

165214442 is an equidigital number, since it uses as much as digits as its factorization.

165214442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82607223.

The product of its digits is 7680, while the sum is 29.

The square root of 165214442 is about 12853.5770118672. The cubic root of 165214442 is about 548.7181630649.

The spelling of 165214442 in words is "one hundred sixty-five million, two hundred fourteen thousand, four hundred forty-two".