47121740 has 24 divisors (see below), whose sum is σ = 99534960. Its totient is φ = 18738368.

The previous prime is 47121731. The next prime is 47121743. The reversal of 47121740 is 4712174.

It is not an unprimeable number, because it can be changed into a prime (47121743) 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, 3350 + ... + 10269.

It is an arithmetic number, because the mean of its divisors is an integer number (4147290).

Almost surely, 2^47121740 is an apocalyptic number.

It is an amenable number.

47121740 is an abundant number, since it is smaller than the sum of its proper divisors (52413220).

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

47121740 is a wasteful number, since it uses less digits than its factorization.

47121740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13801 (or 13799 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 47121740 is about 6864.5276603711. The cubic root of 47121740 is about 361.1939269537.

The spelling of 47121740 in words is "forty-seven million, one hundred twenty-one thousand, seven hundred forty".