30144123430421 has 64 divisors (see below), whose sum is σ = 41801768547840. Its totient is φ = 20981577277440.

The previous prime is 30144123430411. The next prime is 30144123430483. The reversal of 30144123430421 is 12403432144103.

It is a de Polignac number, because none of the positive numbers 2^k-30144123430421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30144123430411) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18836 + ... + 7764573.

It is an arithmetic number, because the mean of its divisors is an integer number (653152633560).

Almost surely, 2^{30144123430421} is an apocalyptic number.

It is an amenable number.

30144123430421 is a deficient number, since it is larger than the sum of its proper divisors (11657645117419).

30144123430421 is a wasteful number, since it uses less digits than its factorization.

30144123430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7783566.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 30144123430421 its reverse (12403432144103), we get a palindrome (42547555574524).

The spelling of 30144123430421 in words is "thirty trillion, one hundred forty-four billion, one hundred twenty-three million, four hundred thirty thousand, four hundred twenty-one".