1258420466 has 4 divisors (see below), whose sum is σ = 1887630702. Its totient is φ = 629210232.

The previous prime is 1258420451. The next prime is 1258420477. The reversal of 1258420466 is 6640248521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6640248521 = 41 ⋅161957281.

It can be written as a sum of positive squares in only one way, i.e., 775344025 + 483076441 = 27845^2 + 21979^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314605115 + ... + 314605118.

Almost surely, 2^1258420466 is an apocalyptic number.

1258420466 is a deficient number, since it is larger than the sum of its proper divisors (629210236).

1258420466 is an equidigital number, since it uses as much as digits as its factorization.

1258420466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629210235.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 1258420466 is about 35474.2225566678. Note that the first 3 decimals coincide. The cubic root of 1258420466 is about 1079.6307797102.

Adding to 1258420466 its reverse (6640248521), we get a palindrome (7898668987).

The spelling of 1258420466 in words is "one billion, two hundred fifty-eight million, four hundred twenty thousand, four hundred sixty-six".