121387238 has 32 divisors (see below), whose sum is σ = 228579840. Its totient is φ = 47139840.

The previous prime is 121387187. The next prime is 121387267. The reversal of 121387238 is 832783121.

It is a junction number, because it is equal to n+sod(n) for n = 121387198 and 121387207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3803 + ... + 16038.

It is an arithmetic number, because the mean of its divisors is an integer number (7143120).

Almost surely, 2^121387238 is an apocalyptic number.

121387238 is a deficient number, since it is larger than the sum of its proper divisors (107192602).

121387238 is a wasteful number, since it uses less digits than its factorization.

121387238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19892.

The product of its digits is 16128, while the sum is 35.

The square root of 121387238 is about 11017.5876669986. The cubic root of 121387238 is about 495.1358168960.

The spelling of 121387238 in words is "one hundred twenty-one million, three hundred eighty-seven thousand, two hundred thirty-eight".