72142937131 has 2 divisors, whose sum is σ = 72142937132. Its totient is φ = 72142937130.

The previous prime is 72142937101. The next prime is 72142937171. The reversal of 72142937131 is 13173924127.

It is an a-pointer prime, because the next prime (72142937171) can be obtained adding 72142937131 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72142937131 - 2¹¹ = 72142935083 is a prime.

It is a super-2 number, since 2×72142937131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72142937101) 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 as a sum of consecutive naturals, namely, 36071468565 + 36071468566.

It is an arithmetic number, because the mean of its divisors is an integer number (36071468566).

Almost surely, 2^72142937131 is an apocalyptic number.

72142937131 is a deficient number, since it is larger than the sum of its proper divisors (1).

72142937131 is an equidigital number, since it uses as much as digits as its factorization.

72142937131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The spelling of 72142937131 in words is "seventy-two billion, one hundred forty-two million, nine hundred thirty-seven thousand, one hundred thirty-one".