30140021421 has 24 divisors (see below), whose sum is σ = 43810823160. Its totient is φ = 19966442496.

The previous prime is 30140021419. The next prime is 30140021447. The reversal of 30140021421 is 12412004103.

30140021421 is a `hidden beast` number, since 30 + 1 + 400 + 214 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21843362025 + 8296659396 = 147795^2 + 91086^2 .

It is not a de Polignac number, because 30140021421 - 2¹ = 30140021419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30140021394 and 30140021403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30140021411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3759265 + ... + 3767273.

It is an arithmetic number, because the mean of its divisors is an integer number (1825450965).

Almost surely, 2^30140021421 is an apocalyptic number.

It is an amenable number.

30140021421 is a deficient number, since it is larger than the sum of its proper divisors (13670801739).

30140021421 is a wasteful number, since it uses less digits than its factorization.

30140021421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605 (or 10602 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 30140021421 its reverse (12412004103), we get a palindrome (42552025524).

The spelling of 30140021421 in words is "thirty billion, one hundred forty million, twenty-one thousand, four hundred twenty-one".