145240019 has 2 divisors, whose sum is σ = 145240020. Its totient is φ = 145240018.

The previous prime is 145240013. The next prime is 145240037. The reversal of 145240019 is 910042541.

145240019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145240019 - 2⁴ = 145240003 is a prime.

It is a super-2 number, since 2×145240019² = 42189326238240722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145240019.

It is not a weakly prime, because it can be changed into another prime (145240013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72620009 + 72620010.

It is an arithmetic number, because the mean of its divisors is an integer number (72620010).

Almost surely, 2^145240019 is an apocalyptic number.

145240019 is a deficient number, since it is larger than the sum of its proper divisors (1).

145240019 is an equidigital number, since it uses as much as digits as its factorization.

145240019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 145240019 is about 12051.5567044262. The cubic root of 145240019 is about 525.6485035226.

The spelling of 145240019 in words is "one hundred forty-five million, two hundred forty thousand, nineteen".