121536039 has 8 divisors (see below), whose sum is σ = 162118000. Its totient is φ = 80989056.

The previous prime is 121536029. The next prime is 121536061. The reversal of 121536039 is 930635121.

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

It is not a de Polignac number, because 121536039 - 2⁵ = 121536007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121535997 and 121536015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121536029) 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, 879 + ... + 15615.

It is an arithmetic number, because the mean of its divisors is an integer number (20264750).

Almost surely, 2^121536039 is an apocalyptic number.

121536039 is a deficient number, since it is larger than the sum of its proper divisors (40581961).

121536039 is a wasteful number, since it uses less digits than its factorization.

121536039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17489.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 121536039 is about 11024.3384835554. The cubic root of 121536039 is about 495.3380529278.

The spelling of 121536039 in words is "one hundred twenty-one million, five hundred thirty-six thousand, thirty-nine".