145522242 has 24 divisors (see below), whose sum is σ = 329007744. Its totient is φ = 46398264.

The previous prime is 145522231. The next prime is 145522283. The reversal of 145522242 is 242225541.

145522242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175338 + ... + 176165.

It is an arithmetic number, because the mean of its divisors is an integer number (13708656).

Almost surely, 2^145522242 is an apocalyptic number.

145522242 is an abundant number, since it is smaller than the sum of its proper divisors (183485502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145522242 is a wasteful number, since it uses less digits than its factorization.

145522242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351534 (or 351531 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 145522242 is about 12063.2600071457. The cubic root of 145522242 is about 525.9887543558.

Adding to 145522242 its reverse (242225541), we get a palindrome (387747783).

The spelling of 145522242 in words is "one hundred forty-five million, five hundred twenty-two thousand, two hundred forty-two".