145122269 has 2 divisors, whose sum is σ = 145122270. Its totient is φ = 145122268.

The previous prime is 145122223. The next prime is 145122287. The reversal of 145122269 is 962221541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93354244 + 51768025 = 9662^2 + 7195^2 .

It is a cyclic number.

It is not a de Polignac number, because 145122269 - 2¹² = 145118173 is a prime.

It is a super-2 number, since 2×145122269² = 42120945919416722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145122569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72561134 + 72561135.

It is an arithmetic number, because the mean of its divisors is an integer number (72561135).

Almost surely, 2^145122269 is an apocalyptic number.

It is an amenable number.

145122269 is a deficient number, since it is larger than the sum of its proper divisors (1).

145122269 is an equidigital number, since it uses as much as digits as its factorization.

145122269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 145122269 is about 12046.6704528679. The cubic root of 145122269 is about 525.5064126445.

The spelling of 145122269 in words is "one hundred forty-five million, one hundred twenty-two thousand, two hundred sixty-nine".