1535240142252 has 36 divisors (see below), whose sum is σ = 3880856674240. Its totient is φ = 511732108512.

The previous prime is 1535240142179. The next prime is 1535240142259. The reversal of 1535240142252 is 2522410425351.

1535240142252 is a `hidden beast` number, since 1 + 5 + 352 + 40 + 14 + 2 + 252 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1535240142259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709413 + ... + 1890435.

Almost surely, 2^{1535240142252} is an apocalyptic number.

1535240142252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1535240142252 is an abundant number, since it is smaller than the sum of its proper divisors (2345616531988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1535240142252 is a wasteful number, since it uses less digits than its factorization.

1535240142252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217142 (or 1217137 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 1535240142252 in words is "one trillion, five hundred thirty-five billion, two hundred forty million, one hundred forty-two thousand, two hundred fifty-two".