47230121 has 4 divisors (see below), whose sum is σ = 47671632. Its totient is φ = 46788612.

The previous prime is 47230103. The next prime is 47230163. The reversal of 47230121 is 12103274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47230121 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47230093 and 47230102.

It is not an unprimeable number, because it can be changed into a prime (47230021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220595 + ... + 220808.

It is an arithmetic number, because the mean of its divisors is an integer number (11917908).

Almost surely, 2^47230121 is an apocalyptic number.

It is an amenable number.

47230121 is a deficient number, since it is larger than the sum of its proper divisors (441511).

47230121 is a wasteful number, since it uses less digits than its factorization.

47230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441510.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 47230121 is about 6872.4174058333. The cubic root of 47230121 is about 361.4706328128.

Adding to 47230121 its reverse (12103274), we get a palindrome (59333395).

The spelling of 47230121 in words is "forty-seven million, two hundred thirty thousand, one hundred twenty-one".