121554938 has 4 divisors (see below), whose sum is σ = 182332410. Its totient is φ = 60777468.

The previous prime is 121554929. The next prime is 121554949. The reversal of 121554938 is 839455121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 115713049 + 5841889 = 10757^2 + 2417^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30388733 + ... + 30388736.

Almost surely, 2^121554938 is an apocalyptic number.

121554938 is a deficient number, since it is larger than the sum of its proper divisors (60777472).

121554938 is an equidigital number, since it uses as much as digits as its factorization.

121554938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60777471.

The product of its digits is 43200, while the sum is 38.

The square root of 121554938 is about 11025.1955991719. The cubic root of 121554938 is about 495.3637268177.

The spelling of 121554938 in words is "one hundred twenty-one million, five hundred fifty-four thousand, nine hundred thirty-eight".