742807887 has 8 divisors (see below), whose sum is σ = 998209536. Its totient is φ = 491305752.

The previous prime is 742807883. The next prime is 742807889. The reversal of 742807887 is 788708247.

742807887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 742807887 - 2² = 742807883 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742807883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974433 + ... + 975194.

It is an arithmetic number, because the mean of its divisors is an integer number (124776192).

Almost surely, 2^742807887 is an apocalyptic number.

742807887 is a deficient number, since it is larger than the sum of its proper divisors (255401649).

742807887 is a wasteful number, since it uses less digits than its factorization.

742807887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949757.

The product of its (nonzero) digits is 1404928, while the sum is 51.

The square root of 742807887 is about 27254.5021418481. The cubic root of 742807887 is about 905.6467552134.

The spelling of 742807887 in words is "seven hundred forty-two million, eight hundred seven thousand, eight hundred eighty-seven".