42131542545 has 48 divisors (see below), whose sum is σ = 76136448960. Its totient is φ = 21533436288.

The previous prime is 42131542529. The next prime is 42131542549. The reversal of 42131542545 is 54524513124.

42131542545 is a `hidden beast` number, since 4 + 213 + 15 + 425 + 4 + 5 = 666.

It is not a de Polignac number, because 42131542545 - 2⁴ = 42131542529 is a prime.

It is a super-2 number, since 2×42131542545² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42131542549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102855 + ... + 307964.

It is an arithmetic number, because the mean of its divisors is an integer number (1586176020).

Almost surely, 2^42131542545 is an apocalyptic number.

42131542545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42131542545 is a deficient number, since it is larger than the sum of its proper divisors (34004906415).

42131542545 is a wasteful number, since it uses less digits than its factorization.

42131542545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410926 (or 410923 counting only the distinct ones).

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

The spelling of 42131542545 in words is "forty-two billion, one hundred thirty-one million, five hundred forty-two thousand, five hundred forty-five".