1242022453 has 12 divisors (see below), whose sum is σ = 1448045100. Its totient is φ = 1062200832.

The previous prime is 1242022433. The next prime is 1242022493. The reversal of 1242022453 is 3542202421.

It can be written as a sum of positive squares in 2 ways, for example, as 739948804 + 502073649 = 27202^2 + 22407^2 .

It is not a de Polignac number, because 1242022453 - 2⁹ = 1242021941 is a prime.

It is a super-2 number, since 2×1242022453² = 3085239547512274418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242022433) 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 in 11 ways as a sum of consecutive naturals, for example, 6226 + ... + 50227.

It is an arithmetic number, because the mean of its divisors is an integer number (120670425).

Almost surely, 2^1242022453 is an apocalyptic number.

It is an amenable number.

1242022453 is a deficient number, since it is larger than the sum of its proper divisors (206022647).

1242022453 is an equidigital number, since it uses as much as digits as its factorization.

1242022453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56916 (or 56909 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1242022453 is about 35242.3389263539. The cubic root of 1242022453 is about 1074.9208387355.

Adding to 1242022453 its reverse (3542202421), we get a palindrome (4784224874).

The spelling of 1242022453 in words is "one billion, two hundred forty-two million, twenty-two thousand, four hundred fifty-three".