1242013524240 has 80 divisors (see below), whose sum is σ = 3983008910400. Its totient is φ = 319782790656.

The previous prime is 1242013524233. The next prime is 1242013524247. The reversal of 1242013524240 is 424253102421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1242013524233) and next prime (1242013524247).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1242013524198 and 1242013524207.

It is not an unprimeable number, because it can be changed into a prime (1242013524247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89218150 + ... + 89232069.

It is an arithmetic number, because the mean of its divisors is an integer number (49787611380).

Almost surely, 2^{1242013524240} is an apocalyptic number.

1242013524240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242013524240 is an abundant number, since it is smaller than the sum of its proper divisors (2740995386160).

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

1242013524240 is a wasteful number, since it uses less digits than its factorization.

1242013524240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178450264 (or 178450258 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 1242013524240 its reverse (424253102421), we get a palindrome (1666266626661).

The spelling of 1242013524240 in words is "one trillion, two hundred forty-two billion, thirteen million, five hundred twenty-four thousand, two hundred forty".