1244027421192 has 64 divisors (see below), whose sum is σ = 3183315552000. Its totient is φ = 404948848640.

The previous prime is 1244027421167. The next prime is 1244027421193. The reversal of 1244027421192 is 2911247204421.

It is a self number, because there is not a number n which added to its sum of digits gives 1244027421192.

It is not an unprimeable number, because it can be changed into a prime (1244027421193) 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, 721659 + ... + 1734602.

It is an arithmetic number, because the mean of its divisors is an integer number (49739305500).

Almost surely, 2^{1244027421192} is an apocalyptic number.

1244027421192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1244027421192 is an abundant number, since it is smaller than the sum of its proper divisors (1939288130808).

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

1244027421192 is a wasteful number, since it uses less digits than its factorization.

1244027421192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456766 (or 2456762 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 1244027421192 in words is "one trillion, two hundred forty-four billion, twenty-seven million, four hundred twenty-one thousand, one hundred ninety-two".