121438150 has 24 divisors (see below), whose sum is σ = 226173024. Its totient is φ = 48511200.

The previous prime is 121438127. The next prime is 121438151. The reversal of 121438150 is 51834121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121438151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60564 + ... + 62536.

It is an arithmetic number, because the mean of its divisors is an integer number (9423876).

Almost surely, 2^121438150 is an apocalyptic number.

121438150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121438150 is a deficient number, since it is larger than the sum of its proper divisors (104734874).

121438150 is a wasteful number, since it uses less digits than its factorization.

121438150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216 (or 3211 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 121438150 is about 11019.8979124128. The cubic root of 121438150 is about 495.2050301886.

The spelling of 121438150 in words is "one hundred twenty-one million, four hundred thirty-eight thousand, one hundred fifty".