121534479 has 32 divisors (see below), whose sum is σ = 207982080. Its totient is φ = 69321600.

The previous prime is 121534471. The next prime is 121534499. The reversal of 121534479 is 974435121.

It is not a de Polignac number, because 121534479 - 2³ = 121534471 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121534471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6987 + ... + 17084.

It is an arithmetic number, because the mean of its divisors is an integer number (6499440).

Almost surely, 2^121534479 is an apocalyptic number.

121534479 is a deficient number, since it is larger than the sum of its proper divisors (86447601).

121534479 is a wasteful number, since it uses less digits than its factorization.

121534479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24108 (or 24102 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 121534479 is about 11024.2677307838. The cubic root of 121534479 is about 495.3359335820.

The spelling of 121534479 in words is "one hundred twenty-one million, five hundred thirty-four thousand, four hundred seventy-nine".