121430523 has 8 divisors (see below), whose sum is σ = 162342928. Its totient is φ = 80735904.

The previous prime is 121430509. The next prime is 121430549. The reversal of 121430523 is 325034121.

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

It is not a de Polignac number, because 121430523 - 2⁶ = 121430459 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121430523.

It is not an unprimeable number, because it can be changed into a prime (121430423) 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, 53140 + ... + 55377.

It is an arithmetic number, because the mean of its divisors is an integer number (20292866).

Almost surely, 2^121430523 is an apocalyptic number.

121430523 is a deficient number, since it is larger than the sum of its proper divisors (40912405).

121430523 is a wasteful number, since it uses less digits than its factorization.

121430523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108893.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 121430523 is about 11019.5518511417. The cubic root of 121430523 is about 495.1946627496.

Adding to 121430523 its reverse (325034121), we get a palindrome (446464644).

The spelling of 121430523 in words is "one hundred twenty-one million, four hundred thirty thousand, five hundred twenty-three".