42372543 has 4 divisors (see below), whose sum is σ = 56496728. Its totient is φ = 28248360.

The previous prime is 42372541. The next prime is 42372559. The reversal of 42372543 is 34527324.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42372543 - 2¹ = 42372541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42372543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42372541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7062088 + ... + 7062093.

It is an arithmetic number, because the mean of its divisors is an integer number (14124182).

Almost surely, 2^42372543 is an apocalyptic number.

42372543 is a deficient number, since it is larger than the sum of its proper divisors (14124185).

42372543 is a wasteful number, since it uses less digits than its factorization.

42372543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14124184.

The product of its digits is 20160, while the sum is 30.

The square root of 42372543 is about 6509.4195593770. The cubic root of 42372543 is about 348.6273941137.

Adding to 42372543 its reverse (34527324), we get a palindrome (76899867).

The spelling of 42372543 in words is "forty-two million, three hundred seventy-two thousand, five hundred forty-three".