47121700 has 18 divisors (see below), whose sum is σ = 102254306. Its totient is φ = 18848640.

The previous prime is 47121689. The next prime is 47121709. The reversal of 47121700 is 712174.

It can be written as a sum of positive squares in 3 ways, for example, as 116964 + 47004736 = 342^2 + 6856^2 .

It is a super-2 number, since 2×47121700² = 4440909221780000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47121709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235509 + ... + 235708.

Almost surely, 2^47121700 is an apocalyptic number.

It is an amenable number.

47121700 is an abundant number, since it is smaller than the sum of its proper divisors (55132606).

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

47121700 is a wasteful number, since it uses less digits than its factorization.

47121700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471231 (or 471224 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 47121700 is about 6864.5247468415. The cubic root of 47121700 is about 361.1938247521.

Adding to 47121700 its reverse (712174), we get a palindrome (47833874).

The spelling of 47121700 in words is "forty-seven million, one hundred twenty-one thousand, seven hundred".