1242523513153 has 24 divisors (see below), whose sum is σ = 1349528949888. Its totient is φ = 1143474501312.

The previous prime is 1242523513093. The next prime is 1242523513183. The reversal of 1242523513153 is 3513153252421.

It is a happy number.

It is not a de Polignac number, because 1242523513153 - 2¹³ = 1242523504961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242523513183) 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, 188058376 + ... + 188064982.

It is an arithmetic number, because the mean of its divisors is an integer number (56230372912).

Almost surely, 2^{1242523513153} is an apocalyptic number.

1242523513153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1242523513153 is a deficient number, since it is larger than the sum of its proper divisors (107005436735).

1242523513153 is a wasteful number, since it uses less digits than its factorization.

1242523513153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9833 (or 9820 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

Adding to 1242523513153 its reverse (3513153252421), we get a palindrome (4755676765574).

The spelling of 1242523513153 in words is "one trillion, two hundred forty-two billion, five hundred twenty-three million, five hundred thirteen thousand, one hundred fifty-three".