122028145 has 8 divisors (see below), whose sum is σ = 147281256. Its totient is φ = 97057536.

The previous prime is 122028131. The next prime is 122028149. The reversal of 122028145 is 541820221.

It can be written as a sum of positive squares in 4 ways, for example, as 22667121 + 99361024 = 4761^2 + 9968^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122028145 - 2²⁵ = 88473713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122028149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69672 + ... + 71401.

It is an arithmetic number, because the mean of its divisors is an integer number (18410157).

Almost surely, 2^122028145 is an apocalyptic number.

It is an amenable number.

122028145 is a deficient number, since it is larger than the sum of its proper divisors (25253111).

122028145 is a wasteful number, since it uses less digits than its factorization.

122028145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141251.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 122028145 is about 11046.6350080013. The cubic root of 122028145 is about 496.0057028155.

Adding to 122028145 its reverse (541820221), we get a palindrome (663848366).

The spelling of 122028145 in words is "one hundred twenty-two million, twenty-eight thousand, one hundred forty-five".