145620269 has 2 divisors, whose sum is σ = 145620270. Its totient is φ = 145620268.

The previous prime is 145620247. The next prime is 145620301. The reversal of 145620269 is 962026541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143688169 + 1932100 = 11987^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 145620269 - 2¹² = 145616173 is a prime.

It is a super-2 number, since 2×145620269² = 42410525487264722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145620239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72810134 + 72810135.

It is an arithmetic number, because the mean of its divisors is an integer number (72810135).

Almost surely, 2^145620269 is an apocalyptic number.

It is an amenable number.

145620269 is a deficient number, since it is larger than the sum of its proper divisors (1).

145620269 is an equidigital number, since it uses as much as digits as its factorization.

145620269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 145620269 is about 12067.3223624796. The cubic root of 145620269 is about 526.1068337313.

The spelling of 145620269 in words is "one hundred forty-five million, six hundred twenty thousand, two hundred sixty-nine".