143142021461 has 2 divisors, whose sum is σ = 143142021462. Its totient is φ = 143142021460.

The previous prime is 143142021431. The next prime is 143142021481. The reversal of 143142021461 is 164120241341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83474188561 + 59667832900 = 288919^2 + 244270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143142021461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143142021431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71571010730 + 71571010731.

It is an arithmetic number, because the mean of its divisors is an integer number (71571010731).

Almost surely, 2^143142021461 is an apocalyptic number.

It is an amenable number.

143142021461 is a deficient number, since it is larger than the sum of its proper divisors (1).

143142021461 is an equidigital number, since it uses as much as digits as its factorization.

143142021461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 143142021461 in words is "one hundred forty-three billion, one hundred forty-two million, twenty-one thousand, four hundred sixty-one".