145204999 has 2 divisors, whose sum is σ = 145205000. Its totient is φ = 145204998.

The previous prime is 145204987. The next prime is 145205029. The reversal of 145204999 is 999402541.

145204999 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 145204999 - 2¹¹ = 145202951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145204919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72602499 + 72602500.

It is an arithmetic number, because the mean of its divisors is an integer number (72602500).

Almost surely, 2^145204999 is an apocalyptic number.

145204999 is a deficient number, since it is larger than the sum of its proper divisors (1).

145204999 is an equidigital number, since it uses as much as digits as its factorization.

145204999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 145204999 is about 12050.1036924999. The cubic root of 145204999 is about 525.6062523340.

The spelling of 145204999 in words is "one hundred forty-five million, two hundred four thousand, nine hundred ninety-nine".