145422420445 has 8 divisors (see below), whose sum is σ = 176234696280. Its totient is φ = 115186075200.

The previous prime is 145422420427. The next prime is 145422420449. The reversal of 145422420445 is 544024224541.

It can be written as a sum of positive squares in 4 ways, for example, as 59918227524 + 85504192921 = 244782^2 + 292411^2 .

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

It is not a de Polignac number, because 145422420445 - 2¹³ = 145422412253 is a prime.

It is a super-3 number, since 3×145422420445³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145422420449) 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, 143982090 + ... + 143983099.

It is an arithmetic number, because the mean of its divisors is an integer number (22029337035).

Almost surely, 2^145422420445 is an apocalyptic number.

It is an amenable number.

145422420445 is a deficient number, since it is larger than the sum of its proper divisors (30812275835).

145422420445 is a wasteful number, since it uses less digits than its factorization.

145422420445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287965295.

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 145422420445 its reverse (544024224541), we get a palindrome (689446644986).

The spelling of 145422420445 in words is "one hundred forty-five billion, four hundred twenty-two million, four hundred twenty thousand, four hundred forty-five".