30400123242 has 16 divisors (see below), whose sum is σ = 61136161632. Its totient is φ = 10077388560.

The previous prime is 30400123241. The next prime is 30400123249. The reversal of 30400123242 is 24232100403.

It is not an unprimeable number, because it can be changed into a prime (30400123241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13995288 + ... + 13997459.

It is an arithmetic number, because the mean of its divisors is an integer number (3821010102).

Almost surely, 2^30400123242 is an apocalyptic number.

30400123242 is an abundant number, since it is smaller than the sum of its proper divisors (30736038390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30400123242 is a wasteful number, since it uses less digits than its factorization.

30400123242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27992933.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 30400123242 its reverse (24232100403), we get a palindrome (54632223645).

The spelling of 30400123242 in words is "thirty billion, four hundred million, one hundred twenty-three thousand, two hundred forty-two".