1242358889501 has 8 divisors (see below), whose sum is σ = 1254063173184. Its totient is φ = 1230656336640.

The previous prime is 1242358889483. The next prime is 1242358889573. The reversal of 1242358889501 is 1059888532421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242358889501 is a prime.

It is a super-2 number, since 2×1242358889501² (a number of 25 digits) 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 (1242358889581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032896 + ... + 1884566.

It is an arithmetic number, because the mean of its divisors is an integer number (156757896648).

Almost surely, 2^{1242358889501} is an apocalyptic number.

It is an amenable number.

1242358889501 is a deficient number, since it is larger than the sum of its proper divisors (11704283683).

1242358889501 is a wasteful number, since it uses less digits than its factorization.

1242358889501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865411.

The product of its (nonzero) digits is 5529600, while the sum is 56.

The spelling of 1242358889501 in words is "one trillion, two hundred forty-two billion, three hundred fifty-eight million, eight hundred eighty-nine thousand, five hundred one".