42831135 has 12 divisors (see below), whose sum is σ = 74240712. Its totient is φ = 22843248.

The previous prime is 42831133. The next prime is 42831197. The reversal of 42831135 is 53113824.

It is a happy number.

It is not a de Polignac number, because 42831135 - 2¹ = 42831133 is a prime.

It is a super-2 number, since 2×42831135² = 3669012250776450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42831099 and 42831108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42831133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475857 + ... + 475946.

It is an arithmetic number, because the mean of its divisors is an integer number (6186726).

Almost surely, 2^42831135 is an apocalyptic number.

42831135 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42831135 is a deficient number, since it is larger than the sum of its proper divisors (31409577).

42831135 is a wasteful number, since it uses less digits than its factorization.

42831135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951814 (or 951811 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 42831135 is about 6544.5500227288. The cubic root of 42831135 is about 349.8805987271.

Adding to 42831135 its reverse (53113824), we get a palindrome (95944959).

The spelling of 42831135 in words is "forty-two million, eight hundred thirty-one thousand, one hundred thirty-five".