121432355 has 8 divisors (see below), whose sum is σ = 158966064. Its totient is φ = 88314400.

The previous prime is 121432351. The next prime is 121432369. The reversal of 121432355 is 553234121.

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 121432355 - 2² = 121432351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121432351) 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, 1103876 + ... + 1103985.

It is an arithmetic number, because the mean of its divisors is an integer number (19870758).

Almost surely, 2^121432355 is an apocalyptic number.

121432355 is a deficient number, since it is larger than the sum of its proper divisors (37533709).

121432355 is a wasteful number, since it uses less digits than its factorization.

121432355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207877.

The product of its digits is 3600, while the sum is 26.

The square root of 121432355 is about 11019.6349758057. The cubic root of 121432355 is about 495.1971530407.

Adding to 121432355 its reverse (553234121), we get a palindrome (674666476).

The spelling of 121432355 in words is "one hundred twenty-one million, four hundred thirty-two thousand, three hundred fifty-five".