121540030 has 16 divisors (see below), whose sum is σ = 221029200. Its totient is φ = 48114432.

The previous prime is 121540007. The next prime is 121540033. The reversal of 121540030 is 30045121.

It is a junction number, because it is equal to n+sod(n) for n = 121539986 and 121540013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121540033) 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, 61680 + ... + 63619.

It is an arithmetic number, because the mean of its divisors is an integer number (13814325).

Almost surely, 2^121540030 is an apocalyptic number.

121540030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121540030 is a deficient number, since it is larger than the sum of its proper divisors (99489170).

121540030 is a wasteful number, since it uses less digits than its factorization.

121540030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125403.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 121540030 is about 11024.5194906626. The cubic root of 121540030 is about 495.3434748382.

Adding to 121540030 its reverse (30045121), we get a palindrome (151585151).

The spelling of 121540030 in words is "one hundred twenty-one million, five hundred forty thousand, thirty".