1271812421454 has 32 divisors (see below), whose sum is σ = 2678624933760. Its totient is φ = 401456210400.

The previous prime is 1271812421447. The next prime is 1271812421461. The reversal of 1271812421454 is 4541242181721.

It is an interprime number because it is at equal distance from previous prime (1271812421447) and next prime (1271812421461).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2071332 + ... + 2614199.

It is an arithmetic number, because the mean of its divisors is an integer number (83707029180).

Almost surely, 2^{1271812421454} is an apocalyptic number.

1271812421454 is an abundant number, since it is smaller than the sum of its proper divisors (1406812512306).

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

1271812421454 is a wasteful number, since it uses less digits than its factorization.

1271812421454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687936.

The product of its digits is 143360, while the sum is 42.

The spelling of 1271812421454 in words is "one trillion, two hundred seventy-one billion, eight hundred twelve million, four hundred twenty-one thousand, four hundred fifty-four".