42987573 has 24 divisors (see below), whose sum is σ = 64164672. Its totient is φ = 27715968.

The previous prime is 42987569. The next prime is 42987629. The reversal of 42987573 is 37578924.

It is not a de Polignac number, because 42987573 - 2² = 42987569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42987523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43240 + ... + 44222.

It is an arithmetic number, because the mean of its divisors is an integer number (2673528).

Almost surely, 2^42987573 is an apocalyptic number.

42987573 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

42987573 is a deficient number, since it is larger than the sum of its proper divisors (21177099).

42987573 is a wasteful number, since it uses less digits than its factorization.

42987573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1142 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 42987573 is about 6556.4909059649. The cubic root of 42987573 is about 350.3060533856.

The spelling of 42987573 in words is "forty-two million, nine hundred eighty-seven thousand, five hundred seventy-three".