403242545 has 8 divisors (see below), whose sum is σ = 484534824. Its totient is φ = 322164864.

The previous prime is 403242523. The next prime is 403242551. The reversal of 403242545 is 545242304.

It can be written as a sum of positive squares in 4 ways, for example, as 6754801 + 396487744 = 2599^2 + 19912^2 .

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 403242545 - 2⁶ = 403242481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 49484 + ... + 57053.

It is an arithmetic number, because the mean of its divisors is an integer number (60566853).

Almost surely, 2^403242545 is an apocalyptic number.

It is an amenable number.

403242545 is a deficient number, since it is larger than the sum of its proper divisors (81292279).

403242545 is a wasteful number, since it uses less digits than its factorization.

403242545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107299.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 403242545 is about 20080.9000047309. The cubic root of 403242545 is about 738.7918837190.

Adding to 403242545 its reverse (545242304), we get a palindrome (948484849).

The spelling of 403242545 in words is "four hundred three million, two hundred forty-two thousand, five hundred forty-five".