145140019 has 2 divisors, whose sum is σ = 145140020. Its totient is φ = 145140018.

The previous prime is 145140013. The next prime is 145140049. The reversal of 145140019 is 910041541.

It is a weak prime.

It is an emirp because it is prime and its reverse (910041541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145140019 - 2⁹ = 145139507 is a prime.

It is a super-2 number, since 2×145140019² = 42131250230640722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145139975 and 145140002.

It is not a weakly prime, because it can be changed into another prime (145140013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72570009 + 72570010.

It is an arithmetic number, because the mean of its divisors is an integer number (72570010).

Almost surely, 2^145140019 is an apocalyptic number.

145140019 is a deficient number, since it is larger than the sum of its proper divisors (1).

145140019 is an equidigital number, since it uses as much as digits as its factorization.

145140019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 145140019 is about 12047.4071484282. The cubic root of 145140019 is about 525.5278367825.

The spelling of 145140019 in words is "one hundred forty-five million, one hundred forty thousand, nineteen".