121471400 has 24 divisors (see below), whose sum is σ = 282421470. Its totient is φ = 48588480.

The previous prime is 121471381. The next prime is 121471403. The reversal of 121471400 is 4174121.

It can be written as a sum of positive squares in 3 ways, for example, as 113507716 + 7963684 = 10654^2 + 2822^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (121471403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 303479 + ... + 303878.

Almost surely, 2^121471400 is an apocalyptic number.

121471400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121471400 is an abundant number, since it is smaller than the sum of its proper divisors (160950070).

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

121471400 is a wasteful number, since it uses less digits than its factorization.

121471400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607373 (or 607364 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 121471400 is about 11021.4064438256. The cubic root of 121471400 is about 495.2502220955.

The spelling of 121471400 in words is "one hundred twenty-one million, four hundred seventy-one thousand, four hundred".