1421339111478 has 96 divisors (see below), whose sum is σ = 3751952585472. Its totient is φ = 397577354400.

The previous prime is 1421339111473. The next prime is 1421339111503. The reversal of 1421339111478 is 8741119331241.

1421339111478 is a `hidden beast` number, since 1 + 4 + 213 + 391 + 1 + 1 + 47 + 8 = 666.

It is a super-2 number, since 2×1421339111478² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421339111473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10156258 + ... + 10295253.

It is an arithmetic number, because the mean of its divisors is an integer number (39082839432).

Almost surely, 2^{1421339111478} is an apocalyptic number.

1421339111478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1421339111478 is an abundant number, since it is smaller than the sum of its proper divisors (2330613473994).

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

1421339111478 is a wasteful number, since it uses less digits than its factorization.

1421339111478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20451552 (or 20451540 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 1421339111478 in words is "one trillion, four hundred twenty-one billion, three hundred thirty-nine million, one hundred eleven thousand, four hundred seventy-eight".