145424369 has 2 divisors, whose sum is σ = 145424370. Its totient is φ = 145424368.

The previous prime is 145424327. The next prime is 145424381. The reversal of 145424369 is 963424541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119617969 + 25806400 = 10937^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 145424369 - 2⁸ = 145424113 is a prime.

It is a super-2 number, since 2×145424369² = 42296494198096322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (145424399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72712184 + 72712185.

It is an arithmetic number, because the mean of its divisors is an integer number (72712185).

Almost surely, 2^145424369 is an apocalyptic number.

It is an amenable number.

145424369 is a deficient number, since it is larger than the sum of its proper divisors (1).

145424369 is an equidigital number, since it uses as much as digits as its factorization.

145424369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 145424369 is about 12059.2026685018. The cubic root of 145424369 is about 525.8708075682.

The spelling of 145424369 in words is "one hundred forty-five million, four hundred twenty-four thousand, three hundred sixty-nine".