23440203142 has 4 divisors (see below), whose sum is σ = 35160304716. Its totient is φ = 11720101570.

The previous prime is 23440203139. The next prime is 23440203167. The reversal of 23440203142 is 24130204432.

It is a happy number.

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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5860050784 + ... + 5860050787.

It is an arithmetic number, because the mean of its divisors is an integer number (8790076179).

Almost surely, 2^23440203142 is an apocalyptic number.

23440203142 is a deficient number, since it is larger than the sum of its proper divisors (11720101574).

23440203142 is a wasteful number, since it uses less digits than its factorization.

23440203142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11720101573.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 23440203142 its reverse (24130204432), we get a palindrome (47570407574).

The spelling of 23440203142 in words is "twenty-three billion, four hundred forty million, two hundred three thousand, one hundred forty-two".