1421544242472 has 128 divisors (see below), whose sum is σ = 3682122917760. Its totient is φ = 457031393280.

The previous prime is 1421544242471. The next prime is 1421544242479. The reversal of 1421544242472 is 2742424451241.

It is not an unprimeable number, because it can be changed into a prime (1421544242471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44127123 + ... + 44159325.

It is an arithmetic number, because the mean of its divisors is an integer number (28766585295).

Almost surely, 2^{1421544242472} is an apocalyptic number.

1421544242472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421544242472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841061458880).

1421544242472 is an abundant number, since it is smaller than the sum of its proper divisors (2260578675288).

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

1421544242472 is a wasteful number, since it uses less digits than its factorization.

1421544242472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32763 (or 32759 counting only the distinct ones).

The product of its digits is 573440, while the sum is 42.

The spelling of 1421544242472 in words is "one trillion, four hundred twenty-one billion, five hundred forty-four million, two hundred forty-two thousand, four hundred seventy-two".