30400242140 has 24 divisors (see below), whose sum is σ = 63862942752. Its totient is φ = 12155823680.

The previous prime is 30400242109. The next prime is 30400242143. The reversal of 30400242140 is 4124200403.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30400242143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208424 + ... + 322863.

It is an arithmetic number, because the mean of its divisors is an integer number (2660955948).

Almost surely, 2^30400242140 is an apocalyptic number.

It is an amenable number.

30400242140 is an abundant number, since it is smaller than the sum of its proper divisors (33462700612).

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

30400242140 is a wasteful number, since it uses less digits than its factorization.

30400242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534157 (or 534155 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 30400242140 its reverse (4124200403), we get a palindrome (34524442543).

The spelling of 30400242140 in words is "thirty billion, four hundred million, two hundred forty-two thousand, one hundred forty".