320142043454 has 4 divisors (see below), whose sum is σ = 480213065184. Its totient is φ = 160071021726.

The previous prime is 320142043451. The next prime is 320142043493. The reversal of 320142043454 is 454340241023.

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

It is a self number, because there is not a number n which added to its sum of digits gives 320142043454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320142043451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80035510862 + ... + 80035510865.

It is an arithmetic number, because the mean of its divisors is an integer number (120053266296).

Almost surely, 2^320142043454 is an apocalyptic number.

320142043454 is a deficient number, since it is larger than the sum of its proper divisors (160071021730).

320142043454 is a wasteful number, since it uses less digits than its factorization.

320142043454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160071021729.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 320142043454 its reverse (454340241023), we get a palindrome (774482284477).

The spelling of 320142043454 in words is "three hundred twenty billion, one hundred forty-two million, forty-three thousand, four hundred fifty-four".