30420400023 has 36 divisors (see below), whose sum is σ = 47872921512. Its totient is φ = 18605246400.

The previous prime is 30420400013. The next prime is 30420400027. The reversal of 30420400023 is 32000402403.

It is not a de Polignac number, because 30420400023 - 2⁶ = 30420399959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30420399969 and 30420400005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420400027) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 186573 + ... + 309273.

Almost surely, 2^30420400023 is an apocalyptic number.

30420400023 is a deficient number, since it is larger than the sum of its proper divisors (17452521489).

30420400023 is a wasteful number, since it uses less digits than its factorization.

30420400023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122896 (or 122880 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 30420400023 its reverse (32000402403), we get a palindrome (62420802426).

The spelling of 30420400023 in words is "thirty billion, four hundred twenty million, four hundred thousand, twenty-three".