121842419 has 4 divisors (see below), whose sum is σ = 122021496. Its totient is φ = 121663344.

The previous prime is 121842367. The next prime is 121842433. The reversal of 121842419 is 914248121.

It is a happy number.

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 121842419 - 2⁸ = 121842163 is a prime.

It is a super-3 number, since 3×121842419³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121842619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88514 + ... + 89879.

It is an arithmetic number, because the mean of its divisors is an integer number (30505374).

Almost surely, 2^121842419 is an apocalyptic number.

121842419 is a deficient number, since it is larger than the sum of its proper divisors (179077).

121842419 is an equidigital number, since it uses as much as digits as its factorization.

121842419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179076.

The product of its digits is 4608, while the sum is 32.

The square root of 121842419 is about 11038.2253555542. The cubic root of 121842419 is about 495.7539359502.

The spelling of 121842419 in words is "one hundred twenty-one million, eight hundred forty-two thousand, four hundred nineteen".