135121432342 has 16 divisors (see below), whose sum is σ = 225314151552. Its totient is φ = 60352004160.

The previous prime is 135121432339. The next prime is 135121432351. The reversal of 135121432342 is 243234121531.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83821423 + ... + 83823034.

It is an arithmetic number, because the mean of its divisors is an integer number (14082134472).

Almost surely, 2^135121432342 is an apocalyptic number.

135121432342 is a deficient number, since it is larger than the sum of its proper divisors (90192719210).

135121432342 is a wasteful number, since it uses less digits than its factorization.

135121432342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167644503.

The product of its digits is 17280, while the sum is 31.

Adding to 135121432342 its reverse (243234121531), we get a palindrome (378355553873).

The spelling of 135121432342 in words is "one hundred thirty-five billion, one hundred twenty-one million, four hundred thirty-two thousand, three hundred forty-two".