1012432321 has 8 divisors (see below), whose sum is σ = 1033084800. Its totient is φ = 991975920.

The previous prime is 1012432313. The next prime is 1012432339. The reversal of 1012432321 is 1232342101.

It is a happy number.

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 1012432321 - 2³ = 1012432313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012432301) 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, 38566 + ... + 59263.

It is an arithmetic number, because the mean of its divisors is an integer number (129135600).

Almost surely, 2^1012432321 is an apocalyptic number.

It is an amenable number.

1012432321 is a deficient number, since it is larger than the sum of its proper divisors (20652479).

1012432321 is an equidigital number, since it uses as much as digits as its factorization.

1012432321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98039.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1012432321 is about 31818.7416627371. The cubic root of 1012432321 is about 1004.1270510185.

Adding to 1012432321 its reverse (1232342101), we get a palindrome (2244774422).

The spelling of 1012432321 in words is "one billion, twelve million, four hundred thirty-two thousand, three hundred twenty-one".