428542072875731 has 8 divisors (see below), whose sum is σ = 442486317058944. Its totient is φ = 414605347839360.

The previous prime is 428542072875701. The next prime is 428542072875739. The reversal of 428542072875731 is 137578270245824.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428542072875731 is a prime.

It is a super-2 number, since 2×428542072875731² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428542072875739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1879670870 + ... + 1879898843.

It is an arithmetic number, because the mean of its divisors is an integer number (55310789632368).

Almost surely, 2^{428542072875731} is an apocalyptic number.

428542072875731 is a deficient number, since it is larger than the sum of its proper divisors (13944244183213).

428542072875731 is a wasteful number, since it uses less digits than its factorization.

428542072875731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759573421.

The product of its (nonzero) digits is 210739200, while the sum is 65.

The spelling of 428542072875731 in words is "four hundred twenty-eight trillion, five hundred forty-two billion, seventy-two million, eight hundred seventy-five thousand, seven hundred thirty-one".