145038434 has 4 divisors (see below), whose sum is σ = 217557654. Its totient is φ = 72519216.

The previous prime is 145038403. The next prime is 145038463. The reversal of 145038434 is 434830541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434830541 = 12941 ⋅33601.

It can be written as a sum of positive squares in only one way, i.e., 108472225 + 36566209 = 10415^2 + 6047^2 .

It is a super-2 number, since 2×145038434² = 42072294674344712, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145038434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36259607 + ... + 36259610.

Almost surely, 2^145038434 is an apocalyptic number.

145038434 is a deficient number, since it is larger than the sum of its proper divisors (72519220).

145038434 is an equidigital number, since it uses as much as digits as its factorization.

145038434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72519219.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 145038434 is about 12043.1903580405. The cubic root of 145038434 is about 525.4052007111.

Adding to 145038434 its reverse (434830541), we get a palindrome (579868975).

The spelling of 145038434 in words is "one hundred forty-five million, thirty-eight thousand, four hundred thirty-four".