121535124 has 12 divisors (see below), whose sum is σ = 283581984. Its totient is φ = 40511704.

The previous prime is 121535123. The next prime is 121535131. The reversal of 121535124 is 421535121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 121535094 and 121535103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121535123) 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, 5063952 + ... + 5063975.

It is an arithmetic number, because the mean of its divisors is an integer number (23631832).

Almost surely, 2^121535124 is an apocalyptic number.

It is an amenable number.

121535124 is an abundant number, since it is smaller than the sum of its proper divisors (162046860).

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

121535124 is a wasteful number, since it uses less digits than its factorization.

121535124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10127934 (or 10127932 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 121535124 is about 11024.2969843886. The cubic root of 121535124 is about 495.3368098522.

The spelling of 121535124 in words is "one hundred twenty-one million, five hundred thirty-five thousand, one hundred twenty-four".