145712969 has 2 divisors, whose sum is σ = 145712970. Its totient is φ = 145712968.

The previous prime is 145712951. The next prime is 145712977. The reversal of 145712969 is 969217541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106337344 + 39375625 = 10312^2 + 6275^2 .

It is a cyclic number.

It is not a de Polignac number, because 145712969 - 2²⁰ = 144664393 is a prime.

It is a super-2 number, since 2×145712969² = 42464538669589922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145712999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72856484 + 72856485.

It is an arithmetic number, because the mean of its divisors is an integer number (72856485).

Almost surely, 2^145712969 is an apocalyptic number.

It is an amenable number.

145712969 is a deficient number, since it is larger than the sum of its proper divisors (1).

145712969 is an equidigital number, since it uses as much as digits as its factorization.

145712969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 145712969 is about 12071.1627029048. The cubic root of 145712969 is about 526.2184476769.

The spelling of 145712969 in words is "one hundred forty-five million, seven hundred twelve thousand, nine hundred sixty-nine".