305134542021 has 8 divisors (see below), whose sum is σ = 408622677280. Its totient is φ = 202534717392.

The previous prime is 305134541969. The next prime is 305134542029. The reversal of 305134542021 is 120245431503.

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

It is not a de Polignac number, because 305134542021 - 2¹³ = 305134533829 is a prime.

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 305134542021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305134542029) 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, 222076855 + ... + 222078228.

It is an arithmetic number, because the mean of its divisors is an integer number (51077834660).

Almost surely, 2^305134542021 is an apocalyptic number.

It is an amenable number.

305134542021 is a deficient number, since it is larger than the sum of its proper divisors (103488135259).

305134542021 is a wasteful number, since it uses less digits than its factorization.

305134542021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444155315.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 305134542021 its reverse (120245431503), we get a palindrome (425379973524).

The spelling of 305134542021 in words is "three hundred five billion, one hundred thirty-four million, five hundred forty-two thousand, twenty-one".