744142491 has 8 divisors (see below), whose sum is σ = 1102433360. Its totient is φ = 496094976.

The previous prime is 744142471. The next prime is 744142537. The reversal of 744142491 is 194241447.

It is not a de Polignac number, because 744142491 - 2¹⁰ = 744141467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744142471) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 13780390 + ... + 13780443.

It is an arithmetic number, because the mean of its divisors is an integer number (137804170).

Almost surely, 2^744142491 is an apocalyptic number.

744142491 is a deficient number, since it is larger than the sum of its proper divisors (358290869).

744142491 is a wasteful number, since it uses less digits than its factorization.

744142491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27560842 (or 27560836 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 744142491 is about 27278.9752556800. The cubic root of 744142491 is about 906.1888229745.

The spelling of 744142491 in words is "seven hundred forty-four million, one hundred forty-two thousand, four hundred ninety-one".