1421078506872 has 16 divisors (see below), whose sum is σ = 3552696267240. Its totient is φ = 473692835616.

The previous prime is 1421078506829. The next prime is 1421078506877. The reversal of 1421078506872 is 2786058701241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421078506877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29605802203 + ... + 29605802250.

Almost surely, 2^{1421078506872} is an apocalyptic number.

1421078506872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1421078506872 is an abundant number, since it is smaller than the sum of its proper divisors (2131617760368).

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

1421078506872 is a wasteful number, since it uses less digits than its factorization.

1421078506872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59211604462 (or 59211604458 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 1421078506872 in words is "one trillion, four hundred twenty-one billion, seventy-eight million, five hundred six thousand, eight hundred seventy-two".