12400432442 has 8 divisors (see below), whose sum is σ = 18688804032. Its totient is φ = 6170831100.

The previous prime is 12400432391. The next prime is 12400432463. The reversal of 12400432442 is 24423400421.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14692034 + ... + 14692877.

It is an arithmetic number, because the mean of its divisors is an integer number (2336100504).

Almost surely, 2^12400432442 is an apocalyptic number.

12400432442 is a deficient number, since it is larger than the sum of its proper divisors (6288371590).

12400432442 is a wasteful number, since it uses less digits than its factorization.

12400432442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29385124.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 12400432442 its reverse (24423400421), we get a palindrome (36823832863).

The spelling of 12400432442 in words is "twelve billion, four hundred million, four hundred thirty-two thousand, four hundred forty-two".