42947397 has 12 divisors (see below), whose sum is σ = 62112960. Its totient is φ = 28595688.

The previous prime is 42947381. The next prime is 42947407. The reversal of 42947397 is 79374924.

42947397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42947397 - 2⁴ = 42947381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42947897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6004 + ... + 11042.

It is an arithmetic number, because the mean of its divisors is an integer number (5176080).

Almost surely, 2^42947397 is an apocalyptic number.

It is an amenable number.

42947397 is a deficient number, since it is larger than the sum of its proper divisors (19165563).

42947397 is a wasteful number, since it uses less digits than its factorization.

42947397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992 (or 5989 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 42947397 is about 6553.4263557318. The cubic root of 42947397 is about 350.1968878620.

The spelling of 42947397 in words is "forty-two million, nine hundred forty-seven thousand, three hundred ninety-seven".