1226342557 has 8 divisors (see below), whose sum is σ = 1349668800. Its totient is φ = 1104989760.

The previous prime is 1226342531. The next prime is 1226342561. The reversal of 1226342557 is 7552436221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1226342557 - 2¹⁵ = 1226309789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226342357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492057 + ... + 494542.

It is an arithmetic number, because the mean of its divisors is an integer number (168708600).

Almost surely, 2^1226342557 is an apocalyptic number.

It is an amenable number.

1226342557 is a deficient number, since it is larger than the sum of its proper divisors (123326243).

1226342557 is a wasteful number, since it uses less digits than its factorization.

1226342557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986723.

The product of its digits is 100800, while the sum is 37.

The square root of 1226342557 is about 35019.1741336086. The cubic root of 1226342557 is about 1070.3782274249.

Adding to 1226342557 its reverse (7552436221), we get a palindrome (8778778778).

The spelling of 1226342557 in words is "one billion, two hundred twenty-six million, three hundred forty-two thousand, five hundred fifty-seven".