145434434 has 4 divisors (see below), whose sum is σ = 218151654. Its totient is φ = 72717216.

The previous prime is 145434427. The next prime is 145434437. The reversal of 145434434 is 434434541.

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., 137007025 + 8427409 = 11705^2 + 2903^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 145434434.

It is not an unprimeable number, because it can be changed into a prime (145434437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36358607 + ... + 36358610.

Almost surely, 2^145434434 is an apocalyptic number.

145434434 is a deficient number, since it is larger than the sum of its proper divisors (72717220).

145434434 is an equidigital number, since it uses as much as digits as its factorization.

145434434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72717219.

The product of its digits is 46080, while the sum is 32.

The square root of 145434434 is about 12059.6199774288. The cubic root of 145434434 is about 525.8829393442.

Adding to 145434434 its reverse (434434541), we get a palindrome (579868975).

The spelling of 145434434 in words is "one hundred forty-five million, four hundred thirty-four thousand, four hundred thirty-four".