405232145 has 32 divisors (see below), whose sum is σ = 529079040. Its totient is φ = 296826880.

The previous prime is 405232141. The next prime is 405232189. The reversal of 405232145 is 541232504.

It is a happy number.

It is not a de Polignac number, because 405232145 - 2² = 405232141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405232141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 500501 + ... + 501309.

It is an arithmetic number, because the mean of its divisors is an integer number (16533720).

Almost surely, 2^405232145 is an apocalyptic number.

It is an amenable number.

405232145 is a deficient number, since it is larger than the sum of its proper divisors (123846895).

405232145 is a wasteful number, since it uses less digits than its factorization.

405232145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 405232145 is about 20130.3786601246. The cubic root of 405232145 is about 740.0049579653.

Adding to 405232145 its reverse (541232504), we get a palindrome (946464649).

The spelling of 405232145 in words is "four hundred five million, two hundred thirty-two thousand, one hundred forty-five".