160242821 has 4 divisors (see below), whose sum is σ = 160290144. Its totient is φ = 160195500.

The previous prime is 160242767. The next prime is 160242829. The reversal of 160242821 is 128242061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 160242821 - 2⁶ = 160242757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160242829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18155 + ... + 25496.

It is an arithmetic number, because the mean of its divisors is an integer number (40072536).

Almost surely, 2^160242821 is an apocalyptic number.

It is an amenable number.

160242821 is a deficient number, since it is larger than the sum of its proper divisors (47323).

160242821 is an equidigital number, since it uses as much as digits as its factorization.

160242821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47322.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 160242821 is about 12658.7053445445. The cubic root of 160242821 is about 543.1580168392.

Adding to 160242821 its reverse (128242061), we get a palindrome (288484882).

The spelling of 160242821 in words is "one hundred sixty million, two hundred forty-two thousand, eight hundred twenty-one".