145143469 has 2 divisors, whose sum is σ = 145143470. Its totient is φ = 145143468.

The previous prime is 145143443. The next prime is 145143571. The reversal of 145143469 is 964341541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124322500 + 20820969 = 11150^2 + 4563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145143469 is a prime.

It is a super-2 number, since 2×145143469² = 42133253186707922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145143269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72571734 + 72571735.

It is an arithmetic number, because the mean of its divisors is an integer number (72571735).

Almost surely, 2^145143469 is an apocalyptic number.

It is an amenable number.

145143469 is a deficient number, since it is larger than the sum of its proper divisors (1).

145143469 is an equidigital number, since it uses as much as digits as its factorization.

145143469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 145143469 is about 12047.5503319140. The cubic root of 145143469 is about 525.5320007080.

The spelling of 145143469 in words is "one hundred forty-five million, one hundred forty-three thousand, four hundred sixty-nine".