42741121531 has 2 divisors, whose sum is σ = 42741121532. Its totient is φ = 42741121530.

The previous prime is 42741121481. The next prime is 42741121589. The reversal of 42741121531 is 13512114724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42741121531 - 2²⁹ = 42204250619 is a prime.

It is a super-2 number, since 2×42741121531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42741121493 and 42741121502.

It is not a weakly prime, because it can be changed into another prime (42741121831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21370560765 + 21370560766.

It is an arithmetic number, because the mean of its divisors is an integer number (21370560766).

Almost surely, 2^42741121531 is an apocalyptic number.

42741121531 is a deficient number, since it is larger than the sum of its proper divisors (1).

42741121531 is an equidigital number, since it uses as much as digits as its factorization.

42741121531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The spelling of 42741121531 in words is "forty-two billion, seven hundred forty-one million, one hundred twenty-one thousand, five hundred thirty-one".