749670143 has 4 divisors (see below), whose sum is σ = 750181248. Its totient is φ = 749159040.

The previous prime is 749670121. The next prime is 749670157. The reversal of 749670143 is 341076947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341076947 = 797 ⋅427951.

It is a cyclic number.

It is not a de Polignac number, because 749670143 - 2¹⁶ = 749604607 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 749670143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749670443) 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, 253346 + ... + 256287.

It is an arithmetic number, because the mean of its divisors is an integer number (187545312).

Almost surely, 2^749670143 is an apocalyptic number.

749670143 is a deficient number, since it is larger than the sum of its proper divisors (511105).

749670143 is a wasteful number, since it uses less digits than its factorization.

749670143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511104.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 749670143 is about 27380.1048756209. The cubic root of 749670143 is about 908.4270791180.

The spelling of 749670143 in words is "seven hundred forty-nine million, six hundred seventy thousand, one hundred forty-three".