42977143 has 12 divisors (see below), whose sum is σ = 48397104. Its totient is φ = 38112800.

The previous prime is 42977131. The next prime is 42977149. The reversal of 42977143 is 34177924.

It is a de Polignac number, because none of the positive numbers 2^k-42977143 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 (42977149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 630 + ... + 9292.

It is an arithmetic number, because the mean of its divisors is an integer number (4033092).

Almost surely, 2^42977143 is an apocalyptic number.

42977143 is a deficient number, since it is larger than the sum of its proper divisors (5419961).

42977143 is a wasteful number, since it uses less digits than its factorization.

42977143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8726 (or 8715 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 42977143 is about 6555.6954627255. The cubic root of 42977143 is about 350.2777197114.

The spelling of 42977143 in words is "forty-two million, nine hundred seventy-seven thousand, one hundred forty-three".