122145572 has 12 divisors (see below), whose sum is σ = 214265436. Its totient is φ = 60926880.

The previous prime is 122145563. The next prime is 122145577. The reversal of 122145572 is 275541221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39262756 + 82882816 = 6266^2 + 9104^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (122145577) 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, 34583 + ... + 37950.

It is an arithmetic number, because the mean of its divisors is an integer number (17855453).

Almost surely, 2^122145572 is an apocalyptic number.

It is an amenable number.

122145572 is a deficient number, since it is larger than the sum of its proper divisors (92119864).

122145572 is a wasteful number, since it uses less digits than its factorization.

122145572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72958 (or 72956 counting only the distinct ones).

The product of its digits is 5600, while the sum is 29.

The square root of 122145572 is about 11051.9487874311. The cubic root of 122145572 is about 496.1647529780.

Adding to 122145572 its reverse (275541221), we get a palindrome (397686793).

The spelling of 122145572 in words is "one hundred twenty-two million, one hundred forty-five thousand, five hundred seventy-two".