6142643461 has 2 divisors, whose sum is σ = 6142643462. Its totient is φ = 6142643460.

The previous prime is 6142643431. The next prime is 6142643489. The reversal of 6142643461 is 1643462416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5536252836 + 606390625 = 74406^2 + 24625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6142643461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6142643461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6142643431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3071321730 + 3071321731.

It is an arithmetic number, because the mean of its divisors is an integer number (3071321731).

Almost surely, 2^6142643461 is an apocalyptic number.

It is an amenable number.

6142643461 is a deficient number, since it is larger than the sum of its proper divisors (1).

6142643461 is an equidigital number, since it uses as much as digits as its factorization.

6142643461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 37.

The square root of 6142643461 is about 78375.0180925019. The cubic root of 6142643461 is about 1831.4079821988.

The spelling of 6142643461 in words is "six billion, one hundred forty-two million, six hundred forty-three thousand, four hundred sixty-one".