145412345 has 8 divisors (see below), whose sum is σ = 187917576. Its totient is φ = 107381376.

The previous prime is 145412329. The next prime is 145412357. The reversal of 145412345 is 543214541.

145412345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3254416 + 142157929 = 1804^2 + 11923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145412345 - 2⁴ = 145412329 is a prime.

It is a super-2 number, since 2×145412345² = 42289500156798050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118492 + ... + 1118621.

It is an arithmetic number, because the mean of its divisors is an integer number (23489697).

Almost surely, 2^145412345 is an apocalyptic number.

It is an amenable number.

145412345 is a deficient number, since it is larger than the sum of its proper divisors (42505231).

145412345 is a wasteful number, since it uses less digits than its factorization.

145412345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237131.

The product of its digits is 9600, while the sum is 29.

The square root of 145412345 is about 12058.7041177732. The cubic root of 145412345 is about 525.8563137918.

Adding to 145412345 its reverse (543214541), we get a palindrome (688626886).

The spelling of 145412345 in words is "one hundred forty-five million, four hundred twelve thousand, three hundred forty-five".