121400023 has 4 divisors (see below), whose sum is σ = 122578768. Its totient is φ = 120221280.

The previous prime is 121400017. The next prime is 121400053. The reversal of 121400023 is 320004121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121400023 - 2⁵ = 121399991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121399976 and 121400012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121400053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589218 + ... + 589423.

It is an arithmetic number, because the mean of its divisors is an integer number (30644692).

Almost surely, 2^121400023 is an apocalyptic number.

121400023 is a deficient number, since it is larger than the sum of its proper divisors (1178745).

121400023 is a wasteful number, since it uses less digits than its factorization.

121400023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178744.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 121400023 is about 11018.1678604022. The cubic root of 121400023 is about 495.1531995284.

Adding to 121400023 its reverse (320004121), we get a palindrome (441404144).

The spelling of 121400023 in words is "one hundred twenty-one million, four hundred thousand, twenty-three".