121533460 has 12 divisors (see below), whose sum is σ = 255220308. Its totient is φ = 48613376.

The previous prime is 121533431. The next prime is 121533487. The reversal of 121533460 is 64335121.

It can be written as a sum of positive squares in 2 ways, for example, as 73342096 + 48191364 = 8564^2 + 6942^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3038317 + ... + 3038356.

It is an arithmetic number, because the mean of its divisors is an integer number (21268359).

Almost surely, 2^121533460 is an apocalyptic number.

121533460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121533460 is an abundant number, since it is smaller than the sum of its proper divisors (133686848).

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

121533460 is a wasteful number, since it uses less digits than its factorization.

121533460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076682 (or 6076680 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 121533460 is about 11024.2215144653. The cubic root of 121533460 is about 495.3345492047.

Adding to 121533460 its reverse (64335121), we get a palindrome (185868581).

The spelling of 121533460 in words is "one hundred twenty-one million, five hundred thirty-three thousand, four hundred sixty".