145272434 has 16 divisors (see below), whose sum is σ = 224207448. Its totient is φ = 70543872.

The previous prime is 145272433. The next prime is 145272437. The reversal of 145272434 is 434272541.

It can be written as a sum of positive squares in 4 ways, for example, as 143161225 + 2111209 = 11965^2 + 1453^2 .

It is a super-2 number, since 2×145272434² = 42208160160568712, 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 145272434.

It is not an unprimeable number, because it can be changed into a prime (145272433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 48344 + ... + 51260.

Almost surely, 2^145272434 is an apocalyptic number.

145272434 is a deficient number, since it is larger than the sum of its proper divisors (78935014).

145272434 is a wasteful number, since it uses less digits than its factorization.

145272434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629.

The product of its digits is 26880, while the sum is 32.

The square root of 145272434 is about 12052.9014764081. The cubic root of 145272434 is about 525.6876057593.

It can be divided in two parts, 14527 and 2434, that added together give a palindrome (16961).

The spelling of 145272434 in words is "one hundred forty-five million, two hundred seventy-two thousand, four hundred thirty-four".