135402152423 has 4 divisors (see below), whose sum is σ = 136390489440. Its totient is φ = 134413815408.

The previous prime is 135402152393. The next prime is 135402152453. The reversal of 135402152423 is 324251204531.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (135402152393) and next prime (135402152453).

It is a cyclic number.

It is not a de Polignac number, because 135402152423 - 2¹² = 135402148327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135402152423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135402152453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494168303 + ... + 494168576.

It is an arithmetic number, because the mean of its divisors is an integer number (34097622360).

Almost surely, 2^135402152423 is an apocalyptic number.

135402152423 is a deficient number, since it is larger than the sum of its proper divisors (988337017).

135402152423 is an equidigital number, since it uses as much as digits as its factorization.

135402152423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988337016.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 135402152423 its reverse (324251204531), we get a palindrome (459653356954).

The spelling of 135402152423 in words is "one hundred thirty-five billion, four hundred two million, one hundred fifty-two thousand, four hundred twenty-three".