42928136 has 8 divisors (see below), whose sum is σ = 80490270. Its totient is φ = 21464064.

The previous prime is 42928133. The next prime is 42928141. The reversal of 42928136 is 63182924.

42928136 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 40883236 + 2044900 = 6394^2 + 1430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 42928096 and 42928105.

It is not an unprimeable number, because it can be changed into a prime (42928133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2683001 + ... + 2683016.

Almost surely, 2^42928136 is an apocalyptic number.

It is an amenable number.

42928136 is a deficient number, since it is larger than the sum of its proper divisors (37562134).

42928136 is a wasteful number, since it uses less digits than its factorization.

42928136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5366023 (or 5366019 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 42928136 is about 6551.9566543133. The cubic root of 42928136 is about 350.1445280659.

The spelling of 42928136 in words is "forty-two million, nine hundred twenty-eight thousand, one hundred thirty-six".