121432345 has 8 divisors (see below), whose sum is σ = 145781640. Its totient is φ = 97104000.

The previous prime is 121432331. The next prime is 121432351. The reversal of 121432345 is 543234121.

It can be written as a sum of positive squares in 4 ways, for example, as 80089 + 121352256 = 283^2 + 11016^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-121432345 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13845 + ... + 20845.

It is an arithmetic number, because the mean of its divisors is an integer number (18222705).

Almost surely, 2^121432345 is an apocalyptic number.

It is an amenable number.

121432345 is a deficient number, since it is larger than the sum of its proper divisors (24349295).

121432345 is an equidigital number, since it uses as much as digits as its factorization.

121432345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10475.

The product of its digits is 2880, while the sum is 25.

The square root of 121432345 is about 11019.6345220701. The cubic root of 121432345 is about 495.1971394475.

Adding to 121432345 its reverse (543234121), we get a palindrome (664666466).

The spelling of 121432345 in words is "one hundred twenty-one million, four hundred thirty-two thousand, three hundred forty-five".