145173434 has 32 divisors (see below), whose sum is σ = 258564096. Its totient is φ = 59819760.

The previous prime is 145173397. The next prime is 145173443. The reversal of 145173434 is 434371541.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 145173434.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71477 + ... + 73479.

It is an arithmetic number, because the mean of its divisors is an integer number (8080128).

Almost surely, 2^145173434 is an apocalyptic number.

145173434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

145173434 is a deficient number, since it is larger than the sum of its proper divisors (113390662).

145173434 is a wasteful number, since it uses less digits than its factorization.

145173434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210.

The product of its digits is 20160, while the sum is 32.

The square root of 145173434 is about 12048.7938815468. The cubic root of 145173434 is about 525.5681637379.

The spelling of 145173434 in words is "one hundred forty-five million, one hundred seventy-three thousand, four hundred thirty-four".