749805421143 has 4 divisors (see below), whose sum is σ = 999740561528. Its totient is φ = 499870280760.

The previous prime is 749805421093. The next prime is 749805421159. The reversal of 749805421143 is 341124508947.

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

It is not a de Polignac number, because 749805421143 - 2²⁴ = 749788643927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749805421092 and 749805421101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749805421193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124967570188 + ... + 124967570193.

It is an arithmetic number, because the mean of its divisors is an integer number (249935140382).

Almost surely, 2^749805421143 is an apocalyptic number.

749805421143 is a deficient number, since it is larger than the sum of its proper divisors (249935140385).

749805421143 is a wasteful number, since it uses less digits than its factorization.

749805421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249935140384.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 749805421143 in words is "seven hundred forty-nine billion, eight hundred five million, four hundred twenty-one thousand, one hundred forty-three".