42736 has 10 divisors (see below), whose sum is σ = 82832. Its totient is φ = 21360.

The previous prime is 42727. The next prime is 42737. The reversal of 42736 is 63724.

42736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320 + ... + 1351.

2⁴²⁷³⁶ is an apocalyptic number.

42736 is the 111-st centered heptagonal number.

It is an amenable number.

42736 is a deficient number, since it is larger than the sum of its proper divisors (40096).

42736 is a wasteful number, since it uses less digits than its factorization.

42736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679 (or 2673 counting only the distinct ones).

The product of its digits is 1008, while the sum is 22.

The square root of 42736 is about 206.7268729508. The cubic root of 42736 is about 34.9621359230.

The spelling of 42736 in words is "forty-two thousand, seven hundred thirty-six".