145412405 has 8 divisors (see below), whose sum is σ = 179211192. Its totient is φ = 113185728.

The previous prime is 145412401. The next prime is 145412419. The reversal of 145412405 is 504214541.

It can be written as a sum of positive squares in 4 ways, for example, as 75238276 + 70174129 = 8674^2 + 8377^2 .

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 145412405 - 2² = 145412401 is a prime.

It is a super-2 number, since 2×145412405² = 42289535055768050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145412401) 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, 392822 + ... + 393191.

It is an arithmetic number, because the mean of its divisors is an integer number (22401399).

Almost surely, 2^145412405 is an apocalyptic number.

It is an amenable number.

145412405 is a deficient number, since it is larger than the sum of its proper divisors (33798787).

145412405 is an equidigital number, since it uses as much as digits as its factorization.

145412405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786055.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 145412405 is about 12058.7066056024. The cubic root of 145412405 is about 525.8563861181.

Adding to 145412405 its reverse (504214541), we get a palindrome (649626946).

The spelling of 145412405 in words is "one hundred forty-five million, four hundred twelve thousand, four hundred five".