121340519 has 4 divisors (see below), whose sum is σ = 121380600. Its totient is φ = 121300440.

The previous prime is 121340477. The next prime is 121340533. The reversal of 121340519 is 915043121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 915043121 = 149 ⋅6141229.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121340519 is a prime.

It is a super-2 number, since 2×121340519² = 29447043102378722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340579) 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, 15092 + ... + 21689.

It is an arithmetic number, because the mean of its divisors is an integer number (30345150).

Almost surely, 2^121340519 is an apocalyptic number.

121340519 is a deficient number, since it is larger than the sum of its proper divisors (40081).

121340519 is an equidigital number, since it uses as much as digits as its factorization.

121340519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40080.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 121340519 is about 11015.4672619912. The cubic root of 121340519 is about 495.0722868278.

The spelling of 121340519 in words is "one hundred twenty-one million, three hundred forty thousand, five hundred nineteen".