1214043557 has 2 divisors, whose sum is σ = 1214043558. Its totient is φ = 1214043556.

The previous prime is 1214043541. The next prime is 1214043581. The reversal of 1214043557 is 7553404121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1041094756 + 172948801 = 32266^2 + 13151^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214043557 - 2⁴ = 1214043541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214043157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607021778 + 607021779.

It is an arithmetic number, because the mean of its divisors is an integer number (607021779).

Almost surely, 2^1214043557 is an apocalyptic number.

It is an amenable number.

1214043557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214043557 is an equidigital number, since it uses as much as digits as its factorization.

1214043557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1214043557 is about 34843.1278303197. The cubic root of 1214043557 is about 1066.7879206668.

Adding to 1214043557 its reverse (7553404121), we get a palindrome (8767447678).

The spelling of 1214043557 in words is "one billion, two hundred fourteen million, forty-three thousand, five hundred fifty-seven".