432240521 has 8 divisors (see below), whose sum is σ = 463461120. Its totient is φ = 401663808.

The previous prime is 432240503. The next prime is 432240547. The reversal of 432240521 is 125042234.

It is a happy number.

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

It is not a de Polignac number, because 432240521 - 2¹⁴ = 432224137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (432240121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159581 + ... + 162266.

It is an arithmetic number, because the mean of its divisors is an integer number (57932640).

Almost surely, 2^432240521 is an apocalyptic number.

It is an amenable number.

432240521 is a deficient number, since it is larger than the sum of its proper divisors (31220599).

432240521 is a wasteful number, since it uses less digits than its factorization.

432240521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321943.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 432240521 is about 20790.3949216940. The cubic root of 432240521 is about 756.0928990334.

Adding to 432240521 its reverse (125042234), we get a palindrome (557282755).

The spelling of 432240521 in words is "four hundred thirty-two million, two hundred forty thousand, five hundred twenty-one".