135420277 has 4 divisors (see below), whose sum is σ = 142547680. Its totient is φ = 128292876.

The previous prime is 135420269. The next prime is 135420319. The reversal of 135420277 is 772024531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 772024531 = 2039 ⋅378629.

It is a cyclic number.

It is not a de Polignac number, because 135420277 - 2³ = 135420269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135424277) 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, 3563673 + ... + 3563710.

It is an arithmetic number, because the mean of its divisors is an integer number (35636920).

Almost surely, 2^135420277 is an apocalyptic number.

It is an amenable number.

135420277 is a deficient number, since it is larger than the sum of its proper divisors (7127403).

135420277 is an equidigital number, since it uses as much as digits as its factorization.

135420277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7127402.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 135420277 is about 11637.0218269109. The cubic root of 135420277 is about 513.5245759110.

The spelling of 135420277 in words is "one hundred thirty-five million, four hundred twenty thousand, two hundred seventy-seven".