1242503513166 has 8 divisors (see below), whose sum is σ = 2485007026344. Its totient is φ = 414167837720.

The previous prime is 1242503513131. The next prime is 1242503513281. The reversal of 1242503513166 is 6613153052421.

It is a happy number.

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

1242503513166 is an admirable number.

It is a super-3 number, since 3×1242503513166³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103541959425 + ... + 103541959436.

It is an arithmetic number, because the mean of its divisors is an integer number (310625878293).

Almost surely, 2^{1242503513166} is an apocalyptic number.

1242503513166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242503513166 is a wasteful number, since it uses less digits than its factorization.

1242503513166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207083918866.

The product of its (nonzero) digits is 129600, while the sum is 39.

Adding to 1242503513166 its reverse (6613153052421), we get a palindrome (7855656565587).

The spelling of 1242503513166 in words is "one trillion, two hundred forty-two billion, five hundred three million, five hundred thirteen thousand, one hundred sixty-six".