1224405345 has 32 divisors (see below), whose sum is σ = 2094107904. Its totient is φ = 609382400.

The previous prime is 1224405341. The next prime is 1224405367. The reversal of 1224405345 is 5435044221.

1224405345 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1224405345 - 2² = 1224405341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1224405341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29136 + ... + 57425.

It is an arithmetic number, because the mean of its divisors is an integer number (65440872).

Almost surely, 2^1224405345 is an apocalyptic number.

1224405345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1224405345 is a deficient number, since it is larger than the sum of its proper divisors (869702559).

1224405345 is a wasteful number, since it uses less digits than its factorization.

1224405345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86633.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 1224405345 is about 34991.5038973749. The cubic root of 1224405345 is about 1069.8143169218.

Adding to 1224405345 its reverse (5435044221), we get a palindrome (6659449566).

The spelling of 1224405345 in words is "one billion, two hundred twenty-four million, four hundred five thousand, three hundred forty-five".