1148122457 has 4 divisors (see below), whose sum is σ = 1148211876. Its totient is φ = 1148033040.

The previous prime is 1148122447. The next prime is 1148122463. The reversal of 1148122457 is 7542218411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 520569856 + 627552601 = 22816^2 + 25051^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148122457 - 2¹⁴ = 1148106073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1148122447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21398 + ... + 52479.

It is an arithmetic number, because the mean of its divisors is an integer number (287052969).

Almost surely, 2^1148122457 is an apocalyptic number.

It is an amenable number.

1148122457 is a deficient number, since it is larger than the sum of its proper divisors (89419).

1148122457 is an equidigital number, since it uses as much as digits as its factorization.

1148122457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89418.

The product of its digits is 17920, while the sum is 35.

The square root of 1148122457 is about 33883.9557460459. The cubic root of 1148122457 is about 1047.1190738455.

The spelling of 1148122457 in words is "one billion, one hundred forty-eight million, one hundred twenty-two thousand, four hundred fifty-seven".