131000042010421 has 16 divisors (see below), whose sum is σ = 133571787663600. Its totient is φ = 128432010889728.

The previous prime is 131000042010403. The next prime is 131000042010457. The reversal of 131000042010421 is 124010240000131.

It can be written as a sum of positive squares in 8 ways, for example, as 7843982105521 + 123156059904900 = 2800711^2 + 11097570^2 .

It is a cyclic number.

It is not a de Polignac number, because 131000042010421 - 2¹⁷ = 131000041879349 is a prime.

It is a super-2 number, since 2×131000042010421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000042010821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2424238615 + ... + 2424292651.

It is an arithmetic number, because the mean of its divisors is an integer number (8348236728975).

Almost surely, 2^{131000042010421} is an apocalyptic number.

It is an amenable number.

131000042010421 is a deficient number, since it is larger than the sum of its proper divisors (2571745653179).

131000042010421 is a wasteful number, since it uses less digits than its factorization.

131000042010421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87528.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 131000042010421 its reverse (124010240000131), we get a palindrome (255010282010552).

The spelling of 131000042010421 in words is "one hundred thirty-one trillion, forty-two million, ten thousand, four hundred twenty-one".