121530536 has 16 divisors (see below), whose sum is σ = 239863200. Its totient is φ = 57567024.

The previous prime is 121530523. The next prime is 121530547. The reversal of 121530536 is 635035121.

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, 399620 + ... + 399923.

It is an arithmetic number, because the mean of its divisors is an integer number (14991450).

Almost surely, 2^121530536 is an apocalyptic number.

It is an amenable number.

121530536 is a deficient number, since it is larger than the sum of its proper divisors (118332664).

121530536 is a wasteful number, since it uses less digits than its factorization.

121530536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799568 (or 799564 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 121530536 is about 11024.0888965937. The cubic root of 121530536 is about 495.3305767189.

Adding to 121530536 its reverse (635035121), we get a palindrome (756565657).

The spelling of 121530536 in words is "one hundred twenty-one million, five hundred thirty thousand, five hundred thirty-six".