121540150 has 48 divisors (see below), whose sum is σ = 245698560. Its totient is φ = 44560800.

The previous prime is 121540099. The next prime is 121540163. The reversal of 121540150 is 51045121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27387 + ... + 31513.

It is an arithmetic number, because the mean of its divisors is an integer number (5118720).

Almost surely, 2^121540150 is an apocalyptic number.

121540150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121540150 is an abundant number, since it is smaller than the sum of its proper divisors (124158410).

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

121540150 is a wasteful number, since it uses less digits than its factorization.

121540150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4189 (or 4184 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 121540150 is about 11024.5249330753. The cubic root of 121540150 is about 495.3436378604.

Adding to 121540150 its reverse (51045121), we get a palindrome (172585271).

The spelling of 121540150 in words is "one hundred twenty-one million, five hundred forty thousand, one hundred fifty".