145204254 has 24 divisors (see below), whose sum is σ = 338810472. Its totient is φ = 44678160.

The previous prime is 145204237. The next prime is 145204261. The reversal of 145204254 is 452402541.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 310032 + ... + 310499.

It is an arithmetic number, because the mean of its divisors is an integer number (14117103).

Almost surely, 2^145204254 is an apocalyptic number.

145204254 is an abundant number, since it is smaller than the sum of its proper divisors (193606218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145204254 is a wasteful number, since it uses less digits than its factorization.

145204254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620552 (or 620549 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 145204254 is about 12050.0727798632. The cubic root of 145204254 is about 525.6053534271.

Adding to 145204254 its reverse (452402541), we get a palindrome (597606795).

The spelling of 145204254 in words is "one hundred forty-five million, two hundred four thousand, two hundred fifty-four".