42756189 has 8 divisors (see below), whose sum is σ = 65152320. Its totient is φ = 24432096.

The previous prime is 42756151. The next prime is 42756239. The reversal of 42756189 is 98165724.

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

It is a de Polignac number, because none of the positive numbers 2^k-42756189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42756189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42756089) 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, 1017984 + ... + 1018025.

It is an arithmetic number, because the mean of its divisors is an integer number (8144040).

Almost surely, 2^42756189 is an apocalyptic number.

It is an amenable number.

42756189 is a deficient number, since it is larger than the sum of its proper divisors (22396131).

42756189 is a wasteful number, since it uses less digits than its factorization.

42756189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036019.

The product of its digits is 120960, while the sum is 42.

The square root of 42756189 is about 6538.8216828416. The cubic root of 42756189 is about 349.6764056733.

It can be divided in two parts, 427 and 56189, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 42756189 in words is "forty-two million, seven hundred fifty-six thousand, one hundred eighty-nine".