121535502 has 16 divisors (see below), whose sum is σ = 265168512. Its totient is φ = 36828920.

The previous prime is 121535497. The next prime is 121535503. The reversal of 121535502 is 205535121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121535503) 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, 920658 + ... + 920789.

It is an arithmetic number, because the mean of its divisors is an integer number (16573032).

Almost surely, 2^121535502 is an apocalyptic number.

121535502 is an abundant number, since it is smaller than the sum of its proper divisors (143633010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121535502 is a wasteful number, since it uses less digits than its factorization.

121535502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841463.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 121535502 is about 11024.3141283256. The cubic root of 121535502 is about 495.3373233858.

The spelling of 121535502 in words is "one hundred twenty-one million, five hundred thirty-five thousand, five hundred two".