1234661143 has 2 divisors, whose sum is σ = 1234661144. Its totient is φ = 1234661142.

The previous prime is 1234661117. The next prime is 1234661147. The reversal of 1234661143 is 3411664321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1234661143 - 2¹⁷ = 1234530071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234661147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617330571 + 617330572.

It is an arithmetic number, because the mean of its divisors is an integer number (617330572).

Almost surely, 2^1234661143 is an apocalyptic number.

1234661143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234661143 is an equidigital number, since it uses as much as digits as its factorization.

1234661143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 1234661143 is about 35137.7452748465. The cubic root of 1234661143 is about 1072.7929893957.

It can be divided in two parts, 123466 and 1143, that added together give a square (124609 = 353²).

The spelling of 1234661143 in words is "one billion, two hundred thirty-four million, six hundred sixty-one thousand, one hundred forty-three".