142041761 has 2 divisors, whose sum is σ = 142041762. Its totient is φ = 142041760.

The previous prime is 142041743. The next prime is 142041773. The reversal of 142041761 is 167140241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141158161 + 883600 = 11881^2 + 940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142041761 is a prime.

It is a super-2 number, since 2×142041761² = 40351723735962242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142041761.

It is not a weakly prime, because it can be changed into another prime (142043761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71020880 + 71020881.

It is an arithmetic number, because the mean of its divisors is an integer number (71020881).

Almost surely, 2^142041761 is an apocalyptic number.

It is an amenable number.

142041761 is a deficient number, since it is larger than the sum of its proper divisors (1).

142041761 is an equidigital number, since it uses as much as digits as its factorization.

142041761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 142041761 is about 11918.1274116364. The cubic root of 142041761 is about 521.7614831493.

The spelling of 142041761 in words is "one hundred forty-two million, forty-one thousand, seven hundred sixty-one".