30405943129 has 9 divisors (see below), whose sum is σ = 31172969149. Its totient is φ = 29657359840.

The previous prime is 30405943123. The next prime is 30405943153. The reversal of 30405943129 is 92134950403.

The square root of 30405943129 is 174373.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 22151857225 + 8254085904 = 148835^2 + 90852^2 .

It is not a de Polignac number, because 30405943129 - 2⁵ = 30405943097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30405943091 and 30405943100.

It is not an unprimeable number, because it can be changed into a prime (30405943123) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7147167 + ... + 7151419.

Almost surely, 2^30405943129 is an apocalyptic number.

30405943129 is the 174373-rd square number.

30405943129 is the 87187-th centered octagonal number.

It is an amenable number.

30405943129 is a deficient number, since it is larger than the sum of its proper divisors (767026020).

30405943129 is an frugal number, since it uses more digits than its factorization.

30405943129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8588 (or 4294 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 30405943129 in words is "thirty billion, four hundred five million, nine hundred forty-three thousand, one hundred twenty-nine".