47421037 has 4 divisors (see below), whose sum is σ = 47441340. Its totient is φ = 47400736.

The previous prime is 47421001. The next prime is 47421047. The reversal of 47421037 is 73012474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73012474 = 2 ⋅36506237.

It can be written as a sum of positive squares in 2 ways, for example, as 27520516 + 19900521 = 5246^2 + 4461^2 .

It is a cyclic number.

It is not a de Polignac number, because 47421037 - 2⁷ = 47420909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47420996 and 47421014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47421047) 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, 6112 + ... + 11497.

It is an arithmetic number, because the mean of its divisors is an integer number (11860335).

Almost surely, 2^47421037 is an apocalyptic number.

It is an amenable number.

47421037 is a deficient number, since it is larger than the sum of its proper divisors (20303).

47421037 is a wasteful number, since it uses less digits than its factorization.

47421037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20302.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 47421037 is about 6886.2934151835. The cubic root of 47421037 is about 361.9570296868.

The spelling of 47421037 in words is "forty-seven million, four hundred twenty-one thousand, thirty-seven".