30400043 has 6 divisors (see below), whose sum is σ = 31779804. Its totient is φ = 29077796.

The previous prime is 30400037. The next prime is 30400049. The reversal of 30400043 is 34000403.

It is an interprime number because it is at equal distance from previous prime (30400037) and next prime (30400049).

It is not a de Polignac number, because 30400043 - 2¹² = 30395947 is a prime.

It is a super-2 number, since 2×30400043² = 1848325228803698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30400049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28205 + ... + 29262.

It is an arithmetic number, because the mean of its divisors is an integer number (5296634).

Almost surely, 2^30400043 is an apocalyptic number.

30400043 is a deficient number, since it is larger than the sum of its proper divisors (1379761).

30400043 is an equidigital number, since it uses as much as digits as its factorization.

30400043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57513 (or 57490 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 30400043 is about 5513.6234002696. The cubic root of 30400043 is about 312.0982972930.

Adding to 30400043 its reverse (34000403), we get a palindrome (64400446).

The spelling of 30400043 in words is "thirty million, four hundred thousand, forty-three".