42387973 has 8 divisors (see below), whose sum is σ = 43598016. Its totient is φ = 41186400.

The previous prime is 42387949. The next prime is 42387979. The reversal of 42387973 is 37978324.

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

It is a cyclic number.

It is not a de Polignac number, because 42387973 - 2¹³ = 42379781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42387979) 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, 8818 + ... + 12748.

It is an arithmetic number, because the mean of its divisors is an integer number (5449752).

Almost surely, 2^42387973 is an apocalyptic number.

It is an amenable number.

42387973 is a deficient number, since it is larger than the sum of its proper divisors (1210043).

42387973 is a wasteful number, since it uses less digits than its factorization.

42387973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235.

The product of its digits is 254016, while the sum is 43.

The square root of 42387973 is about 6510.6046570192. The cubic root of 42387973 is about 348.6697066388.

The spelling of 42387973 in words is "forty-two million, three hundred eighty-seven thousand, nine hundred seventy-three".