121490023 has 4 divisors (see below), whose sum is σ = 125409088. Its totient is φ = 117570960.

The previous prime is 121489987. The next prime is 121490051. The reversal of 121490023 is 320094121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320094121 = 19 ⋅16847059.

It is a cyclic number.

It is not a de Polignac number, because 121490023 - 2¹³ = 121481831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121489976 and 121490003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121490053) 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, 1959486 + ... + 1959547.

It is an arithmetic number, because the mean of its divisors is an integer number (31352272).

Almost surely, 2^121490023 is an apocalyptic number.

121490023 is a deficient number, since it is larger than the sum of its proper divisors (3919065).

121490023 is an equidigital number, since it uses as much as digits as its factorization.

121490023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919064.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 121490023 is about 11022.2512673228. The cubic root of 121490023 is about 495.2755300379.

The spelling of 121490023 in words is "one hundred twenty-one million, four hundred ninety thousand, twenty-three".