145520122 has 16 divisors (see below), whose sum is σ = 238325472. Its totient is φ = 66089520.

The previous prime is 145520117. The next prime is 145520129. The reversal of 145520122 is 221025541.

It is a super-2 number, since 2×145520122² = 42352211813789768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 145520093 and 145520102.

It is not an unprimeable number, because it can be changed into a prime (145520129) 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, 35293 + ... + 39199.

It is an arithmetic number, because the mean of its divisors is an integer number (14895342).

Almost surely, 2^145520122 is an apocalyptic number.

145520122 is a deficient number, since it is larger than the sum of its proper divisors (92805350).

145520122 is a wasteful number, since it uses less digits than its factorization.

145520122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 145520122 is about 12063.1721367143. The cubic root of 145520122 is about 525.9862001035.

Adding to 145520122 its reverse (221025541), we get a palindrome (366545663).

The spelling of 145520122 in words is "one hundred forty-five million, five hundred twenty thousand, one hundred twenty-two".