47742940 has 48 divisors (see below), whose sum is σ = 119572992. Its totient is φ = 15656256.

The previous prime is 47742923. The next prime is 47742941. The reversal of 47742940 is 4924774.

It is a super-4 number, since 4×47742940⁴ (a number of 32 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47742940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47742941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4194 + ... + 10633.

It is an arithmetic number, because the mean of its divisors is an integer number (2491104).

Almost surely, 2^47742940 is an apocalyptic number.

It is an amenable number.

47742940 is an abundant number, since it is smaller than the sum of its proper divisors (71830052).

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

47742940 is a wasteful number, since it uses less digits than its factorization.

47742940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14866 (or 14864 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 47742940 is about 6909.6266179874. The cubic root of 47742940 is about 362.7741944499.

The spelling of 47742940 in words is "forty-seven million, seven hundred forty-two thousand, nine hundred forty".