1742141561 has 2 divisors, whose sum is σ = 1742141562. Its totient is φ = 1742141560.

The previous prime is 1742141543. The next prime is 1742141567. The reversal of 1742141561 is 1651412471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1661051536 + 81090025 = 40756^2 + 9005^2 .

It is a cyclic number.

It is not a de Polignac number, because 1742141561 - 2⁶ = 1742141497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1742141567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 871070780 + 871070781.

It is an arithmetic number, because the mean of its divisors is an integer number (871070781).

Almost surely, 2^1742141561 is an apocalyptic number.

It is an amenable number.

1742141561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1742141561 is an equidigital number, since it uses as much as digits as its factorization.

1742141561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 1742141561 is about 41738.9693332262. The cubic root of 1742141561 is about 1203.2646199837.

The spelling of 1742141561 in words is "one billion, seven hundred forty-two million, one hundred forty-one thousand, five hundred sixty-one".