1142154389 has 2 divisors, whose sum is σ = 1142154390. Its totient is φ = 1142154388.

The previous prime is 1142154383. The next prime is 1142154413. The reversal of 1142154389 is 9834512411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1077480625 + 64673764 = 32825^2 + 8042^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142154389 - 2²⁴ = 1125377173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142154383) 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, 571077194 + 571077195.

It is an arithmetic number, because the mean of its divisors is an integer number (571077195).

Almost surely, 2^1142154389 is an apocalyptic number.

It is an amenable number.

1142154389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142154389 is an equidigital number, since it uses as much as digits as its factorization.

1142154389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 1142154389 is about 33795.7747211097. The cubic root of 1142154389 is about 1045.3015739427.

The spelling of 1142154389 in words is "one billion, one hundred forty-two million, one hundred fifty-four thousand, three hundred eighty-nine".