1242523312100 has 72 divisors (see below), whose sum is σ = 3215434282368. Its totient is φ = 407485900800.

The previous prime is 1242523312091. The next prime is 1242523312109. The reversal of 1242523312100 is 12133252421.

It is an interprime number because it is at equal distance from previous prime (1242523312091) and next prime (1242523312109).

It is a super-3 number, since 3×1242523312100³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1242523312100.

It is not an unprimeable number, because it can be changed into a prime (1242523312109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38571581 + ... + 38603780.

Almost surely, 2^{1242523312100} is an apocalyptic number.

1242523312100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242523312100 is an abundant number, since it is smaller than the sum of its proper divisors (1972910970268).

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

1242523312100 is a wasteful number, since it uses less digits than its factorization.

1242523312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77175405 (or 77175398 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1242523312100 its reverse (12133252421), we get a palindrome (1254656564521).

The spelling of 1242523312100 in words is "one trillion, two hundred forty-two billion, five hundred twenty-three million, three hundred twelve thousand, one hundred".