1143420349 has 2 divisors, whose sum is σ = 1143420350. Its totient is φ = 1143420348.

The previous prime is 1143420347. The next prime is 1143420373. The reversal of 1143420349 is 9430243411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 878707449 + 264712900 = 29643^2 + 16270^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143420349 - 2¹ = 1143420347 is a prime.

Together with 1143420347, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1143420349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143420347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571710174 + 571710175.

It is an arithmetic number, because the mean of its divisors is an integer number (571710175).

Almost surely, 2^1143420349 is an apocalyptic number.

It is an amenable number.

1143420349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143420349 is an equidigital number, since it uses as much as digits as its factorization.

1143420349 is an evil number, because the sum of its binary digits is even.

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

The square root of 1143420349 is about 33814.4990943234. The cubic root of 1143420349 is about 1045.6876342327.

The spelling of 1143420349 in words is "one billion, one hundred forty-three million, four hundred twenty thousand, three hundred forty-nine".