1423849721454 has 48 divisors (see below), whose sum is σ = 3116650860960. Its totient is φ = 469771099200.

The previous prime is 1423849721419. The next prime is 1423849721479. The reversal of 1423849721454 is 4541279483241.

It is a happy number.

1423849721454 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 8 + 497 + 2 + 145 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1423849721454.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192709 + ... + 1698480.

It is an arithmetic number, because the mean of its divisors is an integer number (64930226270).

Almost surely, 2^{1423849721454} is an apocalyptic number.

1423849721454 is an abundant number, since it is smaller than the sum of its proper divisors (1692801139506).

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

1423849721454 is a wasteful number, since it uses less digits than its factorization.

1423849721454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891625 (or 1891622 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 1423849721454 in words is "one trillion, four hundred twenty-three billion, eight hundred forty-nine million, seven hundred twenty-one thousand, four hundred fifty-four".