302123438947 has 4 divisors (see below), whose sum is σ = 329589206136. Its totient is φ = 274657671760.

The previous prime is 302123438899. The next prime is 302123438999. The reversal of 302123438947 is 749834321203.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302123438947 is a prime.

It is a super-2 number, since 2×302123438947² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 302123438897 and 302123438906.

It is not an unprimeable number, because it can be changed into a prime (302123435947) 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 3 ways as a sum of consecutive naturals, for example, 13732883578 + ... + 13732883599.

It is an arithmetic number, because the mean of its divisors is an integer number (82397301534).

Almost surely, 2^302123438947 is an apocalyptic number.

302123438947 is a deficient number, since it is larger than the sum of its proper divisors (27465767189).

302123438947 is a wasteful number, since it uses less digits than its factorization.

302123438947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27465767188.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 302123438947 in words is "three hundred two billion, one hundred twenty-three million, four hundred thirty-eight thousand, nine hundred forty-seven".