1242372712420 has 24 divisors (see below), whose sum is σ = 2981694510144. Its totient is φ = 425956358496.

The previous prime is 1242372712381. The next prime is 1242372712421. The reversal of 1242372712420 is 242172732421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242372712420.

It is not an unprimeable number, because it can be changed into a prime (1242372712421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4437045262 + ... + 4437045541.

It is an arithmetic number, because the mean of its divisors is an integer number (124237271256).

Almost surely, 2^{1242372712420} is an apocalyptic number.

1242372712420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242372712420 is an abundant number, since it is smaller than the sum of its proper divisors (1739321797724).

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

1242372712420 is a wasteful number, since it uses less digits than its factorization.

1242372712420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8874090819 (or 8874090817 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 1242372712420 in words is "one trillion, two hundred forty-two billion, three hundred seventy-two million, seven hundred twelve thousand, four hundred twenty".