135321043 has 32 divisors (see below), whose sum is σ = 165876480. Its totient is φ = 108743040.

The previous prime is 135321007. The next prime is 135321061. The reversal of 135321043 is 340123531.

It is a cyclic number.

It is not a de Polignac number, because 135321043 - 2²¹ = 133223891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135322043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362605 + ... + 362977.

It is an arithmetic number, because the mean of its divisors is an integer number (5183640).

Almost surely, 2^135321043 is an apocalyptic number.

135321043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135321043 is a deficient number, since it is larger than the sum of its proper divisors (30555437).

135321043 is a wasteful number, since it uses less digits than its factorization.

135321043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 135321043 is about 11632.7573257590. The cubic root of 135321043 is about 513.3991108248.

Adding to 135321043 its reverse (340123531), we get a palindrome (475444574).

The spelling of 135321043 in words is "one hundred thirty-five million, three hundred twenty-one thousand, forty-three".