135040145402 has 12 divisors (see below), whose sum is σ = 209785912206. Its totient is φ = 65191793520.

The previous prime is 135040145393. The next prime is 135040145447. The reversal of 135040145402 is 204541040531.

It can be written as a sum of positive squares in 3 ways, for example, as 103059618841 + 31980526561 = 321029^2 + 178831^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40141049 + ... + 40144412.

Almost surely, 2^135040145402 is an apocalyptic number.

135040145402 is a deficient number, since it is larger than the sum of its proper divisors (74745766804).

135040145402 is an equidigital number, since it uses as much as digits as its factorization.

135040145402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80285521 (or 80285492 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 135040145402 its reverse (204541040531), we get a palindrome (339581185933).

The spelling of 135040145402 in words is "one hundred thirty-five billion, forty million, one hundred forty-five thousand, four hundred two".