121571954 has 16 divisors (see below), whose sum is σ = 210256128. Its totient is φ = 51640512.

The previous prime is 121571941. The next prime is 121571959. The reversal of 121571954 is 459175121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121571959) 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, 36842 + ... + 40005.

It is an arithmetic number, because the mean of its divisors is an integer number (13141008).

Almost surely, 2^121571954 is an apocalyptic number.

121571954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121571954 is a deficient number, since it is larger than the sum of its proper divisors (88684174).

121571954 is a wasteful number, since it uses less digits than its factorization.

121571954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76969.

The product of its digits is 12600, while the sum is 35.

The square root of 121571954 is about 11025.9672591569. The cubic root of 121571954 is about 495.3868404156.

The spelling of 121571954 in words is "one hundred twenty-one million, five hundred seventy-one thousand, nine hundred fifty-four".