121431055 has 8 divisors (see below), whose sum is σ = 146233872. Its totient is φ = 96800448.

The previous prime is 121431049. The next prime is 121431067. The reversal of 121431055 is 550134121.

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 121431055 - 2⁷ = 121430927 is a prime.

It is a super-2 number, since 2×121431055² = 29491002236826050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 41494 + ... + 44323.

It is an arithmetic number, because the mean of its divisors is an integer number (18279234).

Almost surely, 2^121431055 is an apocalyptic number.

121431055 is a deficient number, since it is larger than the sum of its proper divisors (24802817).

121431055 is an equidigital number, since it uses as much as digits as its factorization.

121431055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86105.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 121431055 is about 11019.5759900279. The cubic root of 121431055 is about 495.1953859153.

Adding to 121431055 its reverse (550134121), we get a palindrome (671565176).

The spelling of 121431055 in words is "one hundred twenty-one million, four hundred thirty-one thousand, fifty-five".