42521145012131 has 32 divisors (see below), whose sum is σ = 47736635701248. Its totient is φ = 37677599608320.

The previous prime is 42521145012091. The next prime is 42521145012263. The reversal of 42521145012131 is 13121054112524.

It is a cyclic number.

It is not a de Polignac number, because 42521145012131 - 2⁶ = 42521145012067 is a prime.

It is a super-2 number, since 2×42521145012131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42521135012131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164500916 + ... + 164759198.

It is an arithmetic number, because the mean of its divisors is an integer number (1491769865664).

Almost surely, 2^{42521145012131} is an apocalyptic number.

42521145012131 is a deficient number, since it is larger than the sum of its proper divisors (5215490689117).

42521145012131 is a wasteful number, since it uses less digits than its factorization.

42521145012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266811.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 42521145012131 its reverse (13121054112524), we get a palindrome (55642199124655).

The spelling of 42521145012131 in words is "forty-two trillion, five hundred twenty-one billion, one hundred forty-five million, twelve thousand, one hundred thirty-one".