1420443378734 has 4 divisors (see below), whose sum is σ = 2130665068104. Its totient is φ = 710221689366.

The previous prime is 1420443378703. The next prime is 1420443378799. The reversal of 1420443378734 is 4378733440241.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 355110844682 + ... + 355110844685.

It is an arithmetic number, because the mean of its divisors is an integer number (532666267026).

Almost surely, 2^{1420443378734} is an apocalyptic number.

1420443378734 is a deficient number, since it is larger than the sum of its proper divisors (710221689370).

1420443378734 is an equidigital number, since it uses as much as digits as its factorization.

1420443378734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710221689369.

The product of its (nonzero) digits is 5419008, while the sum is 50.

The spelling of 1420443378734 in words is "one trillion, four hundred twenty billion, four hundred forty-three million, three hundred seventy-eight thousand, seven hundred thirty-four".