740042789 has 4 divisors (see below), whose sum is σ = 752174700. Its totient is φ = 727910880.

The previous prime is 740042783. The next prime is 740042791. The reversal of 740042789 is 987240047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987240047 = 4297 ⋅229751.

It can be written as a sum of positive squares in 2 ways, for example, as 184497889 + 555544900 = 13583^2 + 23570^2 .

It is a cyclic number.

It is not a de Polignac number, because 740042789 - 2⁴ = 740042773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740042783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6065864 + ... + 6065985.

It is an arithmetic number, because the mean of its divisors is an integer number (188043675).

Almost surely, 2^740042789 is an apocalyptic number.

It is an amenable number.

740042789 is a deficient number, since it is larger than the sum of its proper divisors (12131911).

740042789 is a wasteful number, since it uses less digits than its factorization.

740042789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12131910.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 740042789 is about 27203.7274835637. The cubic root of 740042789 is about 904.5216030217.

The spelling of 740042789 in words is "seven hundred forty million, forty-two thousand, seven hundred eighty-nine".