83540121 has 8 divisors (see below), whose sum is σ = 127299264. Its totient is φ = 47737200.

The previous prime is 83540113. The next prime is 83540123. The reversal of 83540121 is 12104538.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83540121 - 2³ = 83540113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83540091 and 83540100.

It is not an unprimeable number, because it can be changed into a prime (83540123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1989030 + ... + 1989071.

It is an arithmetic number, because the mean of its divisors is an integer number (15912408).

Almost surely, 2^83540121 is an apocalyptic number.

It is an amenable number.

83540121 is a deficient number, since it is larger than the sum of its proper divisors (43759143).

83540121 is a wasteful number, since it uses less digits than its factorization.

83540121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978111.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 83540121 is about 9140.0285010497. The cubic root of 83540121 is about 437.1512252690.

Adding to 83540121 its reverse (12104538), we get a palindrome (95644659).

The spelling of 83540121 in words is "eighty-three million, five hundred forty thousand, one hundred twenty-one".