1421343552540 has 48 divisors (see below), whose sum is σ = 3993824757888. Its totient is φ = 377685632064.

The previous prime is 1421343552523. The next prime is 1421343552569. The reversal of 1421343552540 is 452553431241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41836482 + ... + 41870441.

It is an arithmetic number, because the mean of its divisors is an integer number (83204682456).

Almost surely, 2^{1421343552540} is an apocalyptic number.

1421343552540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421343552540 is an abundant number, since it is smaller than the sum of its proper divisors (2572481205348).

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

1421343552540 is a wasteful number, since it uses less digits than its factorization.

1421343552540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83707218 (or 83707216 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 1421343552540 its reverse (452553431241), we get a palindrome (1873896983781).

The spelling of 1421343552540 in words is "one trillion, four hundred twenty-one billion, three hundred forty-three million, five hundred fifty-two thousand, five hundred forty".