1224635420139 has 24 divisors (see below), whose sum is σ = 1691676058800. Its totient is φ = 787999696512.

The previous prime is 1224635420111. The next prime is 1224635420171. The reversal of 1224635420139 is 9310245364221.

It is not a de Polignac number, because 1224635420139 - 2⁷ = 1224635420011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1224635420139.

It is not an unprimeable number, because it can be changed into a prime (1224635420039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7378437 + ... + 7542585.

It is an arithmetic number, because the mean of its divisors is an integer number (70486502450).

Almost surely, 2^{1224635420139} is an apocalyptic number.

1224635420139 is a deficient number, since it is larger than the sum of its proper divisors (467040638661).

1224635420139 is a wasteful number, since it uses less digits than its factorization.

1224635420139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167167 (or 167138 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 1224635420139 in words is "one trillion, two hundred twenty-four billion, six hundred thirty-five million, four hundred twenty thousand, one hundred thirty-nine".