135251155042 has 4 divisors (see below), whose sum is σ = 202876732566. Its totient is φ = 67625577520.

The previous prime is 135251155033. The next prime is 135251155079. The reversal of 135251155042 is 240551152531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240551152531 = 83 ⋅2898206657.

It can be written as a sum of positive squares in only one way, i.e., 85837866361 + 49413288681 = 292981^2 + 222291^2 .

It is a junction number, because it is equal to n+sod(n) for n = 135251154989 and 135251155007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33812788759 + ... + 33812788762.

Almost surely, 2^135251155042 is an apocalyptic number.

135251155042 is a deficient number, since it is larger than the sum of its proper divisors (67625577524).

135251155042 is an equidigital number, since it uses as much as digits as its factorization.

135251155042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67625577523.

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 135251155042 in words is "one hundred thirty-five billion, two hundred fifty-one million, one hundred fifty-five thousand, forty-two".