135252142947 has 24 divisors (see below), whose sum is σ = 198416088000. Its totient is φ = 88770248448.

The previous prime is 135252142931. The next prime is 135252142957. The reversal of 135252142947 is 749241252531.

135252142947 is a `hidden beast` number, since 1 + 35 + 2 + 521 + 4 + 2 + 94 + 7 = 666.

It is not a de Polignac number, because 135252142947 - 2⁴ = 135252142931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135252142957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294747 + ... + 597812.

It is an arithmetic number, because the mean of its divisors is an integer number (8267337000).

Almost surely, 2^135252142947 is an apocalyptic number.

135252142947 is a deficient number, since it is larger than the sum of its proper divisors (63163945053).

135252142947 is a wasteful number, since it uses less digits than its factorization.

135252142947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892827 (or 892824 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 135252142947 in words is "one hundred thirty-five billion, two hundred fifty-two million, one hundred forty-two thousand, nine hundred forty-seven".