20143401742 has 4 divisors (see below), whose sum is σ = 30215102616. Its totient is φ = 10071700870.

The previous prime is 20143401713. The next prime is 20143401757. The reversal of 20143401742 is 24710434102.

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 20143401742.

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, 5035850434 + ... + 5035850437.

It is an arithmetic number, because the mean of its divisors is an integer number (7553775654).

Almost surely, 2^20143401742 is an apocalyptic number.

20143401742 is a deficient number, since it is larger than the sum of its proper divisors (10071700874).

20143401742 is a wasteful number, since it uses less digits than its factorization.

20143401742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10071700873.

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 20143401742 its reverse (24710434102), we get a palindrome (44853835844).

The spelling of 20143401742 in words is "twenty billion, one hundred forty-three million, four hundred one thousand, seven hundred forty-two".