145414426 has 4 divisors (see below), whose sum is σ = 218121642. Its totient is φ = 72707212.

The previous prime is 145414421. The next prime is 145414453. The reversal of 145414426 is 624414541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624414541 = 71 ⋅8794571.

It can be written as a sum of positive squares in only one way, i.e., 98505625 + 46908801 = 9925^2 + 6849^2 .

It is a super-2 number, since 2×145414426² = 42290710577818952, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (145414421) 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 as a sum of consecutive naturals, namely, 36353605 + ... + 36353608.

Almost surely, 2^145414426 is an apocalyptic number.

145414426 is a deficient number, since it is larger than the sum of its proper divisors (72707216).

145414426 is an equidigital number, since it uses as much as digits as its factorization.

145414426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72707215.

The product of its digits is 15360, while the sum is 31.

The square root of 145414426 is about 12058.7904036848. The cubic root of 145414426 is about 525.8588222945.

Adding to 145414426 its reverse (624414541), we get a palindrome (769828967).

The spelling of 145414426 in words is "one hundred forty-five million, four hundred fourteen thousand, four hundred twenty-six".