47132421 has 8 divisors (see below), whose sum is σ = 71820864. Its totient is φ = 26932800.

The previous prime is 47132417. The next prime is 47132467. The reversal of 47132421 is 12423174.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47132421 - 2² = 47132417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47132391 and 47132400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47137421) 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, 1122180 + ... + 1122221.

It is an arithmetic number, because the mean of its divisors is an integer number (8977608).

Almost surely, 2^47132421 is an apocalyptic number.

It is an amenable number.

47132421 is a deficient number, since it is larger than the sum of its proper divisors (24688443).

47132421 is a wasteful number, since it uses less digits than its factorization.

47132421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244411.

The product of its digits is 1344, while the sum is 24.

The square root of 47132421 is about 6865.3056013553. The cubic root of 47132421 is about 361.2212152845.

Adding to 47132421 its reverse (12423174), we get a palindrome (59555595).

The spelling of 47132421 in words is "forty-seven million, one hundred thirty-two thousand, four hundred twenty-one".