1243422031454 has 4 divisors (see below), whose sum is σ = 1865133047184. Its totient is φ = 621711015726.

The previous prime is 1243422031421. The next prime is 1243422031529. The reversal of 1243422031454 is 4541302243421.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 310855507862 + ... + 310855507865.

It is an arithmetic number, because the mean of its divisors is an integer number (466283261796).

Almost surely, 2^{1243422031454} is an apocalyptic number.

1243422031454 is a deficient number, since it is larger than the sum of its proper divisors (621711015730).

1243422031454 is an equidigital number, since it uses as much as digits as its factorization.

1243422031454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621711015729.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 1243422031454 its reverse (4541302243421), we get a palindrome (5784724274875).

The spelling of 1243422031454 in words is "one trillion, two hundred forty-three billion, four hundred twenty-two million, thirty-one thousand, four hundred fifty-four".