1122124457 has 4 divisors (see below), whose sum is σ = 1188131796. Its totient is φ = 1056117120.

The previous prime is 1122124433. The next prime is 1122124469. The reversal of 1122124457 is 7544212211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 579653776 + 542470681 = 24076^2 + 23291^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122124457 - 2¹⁶ = 1122058921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122124357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33003644 + ... + 33003677.

It is an arithmetic number, because the mean of its divisors is an integer number (297032949).

Almost surely, 2^1122124457 is an apocalyptic number.

1122124457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1122124457 is a deficient number, since it is larger than the sum of its proper divisors (66007339).

1122124457 is an equidigital number, since it uses as much as digits as its factorization.

1122124457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66007338.

The product of its digits is 4480, while the sum is 29.

The square root of 1122124457 is about 33498.1261714741. The cubic root of 1122124457 is about 1039.1550264993.

Adding to 1122124457 its reverse (7544212211), we get a palindrome (8666336668).

The spelling of 1122124457 in words is "one billion, one hundred twenty-two million, one hundred twenty-four thousand, four hundred fifty-seven".