121540036 has 36 divisors (see below), whose sum is σ = 227751132. Its totient is φ = 56733696.

The previous prime is 121540033. The next prime is 121540039. The reversal of 121540036 is 630045121.

It is an interprime number because it is at equal distance from previous prime (121540033) and next prime (121540039).

It can be written as a sum of positive squares in 2 ways, for example, as 83174400 + 38365636 = 9120^2 + 6194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121539989 and 121540016.

It is not an unprimeable number, because it can be changed into a prime (121540033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104836 + ... + 105988.

Almost surely, 2^121540036 is an apocalyptic number.

It is an amenable number.

121540036 is a deficient number, since it is larger than the sum of its proper divisors (106211096).

121540036 is a wasteful number, since it uses less digits than its factorization.

121540036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 121540036 is about 11024.5197627833. The cubic root of 121540036 is about 495.3434829893.

Adding to 121540036 its reverse (630045121), we get a palindrome (751585157).

It can be divided in two parts, 121 and 540036, that multiplied together give a palindrome (65344356).

The spelling of 121540036 in words is "one hundred twenty-one million, five hundred forty thousand, thirty-six".