121430123 has 8 divisors (see below), whose sum is σ = 122508960. Its totient is φ = 120355200.

The previous prime is 121430119. The next prime is 121430143. The reversal of 121430123 is 321034121.

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 121430123 - 2² = 121430119 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121430143) 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, 119843 + ... + 120851.

It is an arithmetic number, because the mean of its divisors is an integer number (15313620).

Almost surely, 2^121430123 is an apocalyptic number.

121430123 is a deficient number, since it is larger than the sum of its proper divisors (1078837).

121430123 is a wasteful number, since it uses less digits than its factorization.

121430123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121430123 is about 11019.5337015683. The cubic root of 121430123 is about 495.1941190146.

Adding to 121430123 its reverse (321034121), we get a palindrome (442464244).

The spelling of 121430123 in words is "one hundred twenty-one million, four hundred thirty thousand, one hundred twenty-three".