145505434 has 4 divisors (see below), whose sum is σ = 218258154. Its totient is φ = 72752716.

The previous prime is 145505419. The next prime is 145505443. The reversal of 145505434 is 434505541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 111830625 + 33674809 = 10575^2 + 5803^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145505396 and 145505405.

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 as a sum of consecutive naturals, namely, 36376357 + ... + 36376360.

Almost surely, 2^145505434 is an apocalyptic number.

145505434 is a deficient number, since it is larger than the sum of its proper divisors (72752720).

145505434 is an equidigital number, since it uses as much as digits as its factorization.

145505434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72752719.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 145505434 is about 12062.5633262586. The cubic root of 145505434 is about 525.9685027909.

The spelling of 145505434 in words is "one hundred forty-five million, five hundred five thousand, four hundred thirty-four".