4042131525 has 24 divisors (see below), whose sum is σ = 7425546560. Its totient is φ = 2155803120.

The previous prime is 4042131487. The next prime is 4042131529. The reversal of 4042131525 is 5251312404.

4042131525 is a `hidden beast` number, since 4 + 0 + 4 + 2 + 131 + 525 = 666.

It is not a de Polignac number, because 4042131525 - 2⁶ = 4042131461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042131529) 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, 2993497 + ... + 2994846.

Almost surely, 2^4042131525 is an apocalyptic number.

4042131525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4042131525 is a deficient number, since it is larger than the sum of its proper divisors (3383415035).

4042131525 is a wasteful number, since it uses less digits than its factorization.

4042131525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988362 (or 5988351 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 4042131525 is about 63577.7596727032. The cubic root of 4042131525 is about 1592.9549002876.

Adding to 4042131525 its reverse (5251312404), we get a palindrome (9293443929).

The spelling of 4042131525 in words is "four billion, forty-two million, one hundred thirty-one thousand, five hundred twenty-five".