121544419 has 2 divisors, whose sum is σ = 121544420. Its totient is φ = 121544418.

The previous prime is 121544411. The next prime is 121544431. The reversal of 121544419 is 914445121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121544419 - 2³ = 121544411 is a prime.

It is a super-2 number, since 2×121544419² = 29546091580095122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121544411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60772209 + 60772210.

It is an arithmetic number, because the mean of its divisors is an integer number (60772210).

Almost surely, 2^121544419 is an apocalyptic number.

121544419 is a deficient number, since it is larger than the sum of its proper divisors (1).

121544419 is an equidigital number, since it uses as much as digits as its factorization.

121544419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 31.

The square root of 121544419 is about 11024.7185451602. The cubic root of 121544419 is about 495.3494373081.

The spelling of 121544419 in words is "one hundred twenty-one million, five hundred forty-four thousand, four hundred nineteen".