29840129242140 has 48 divisors (see below), whose sum is σ = 95488413576192. Its totient is φ = 6820600969536.

The previous prime is 29840129242123. The next prime is 29840129242141. The reversal of 29840129242140 is 4124292104892.

It is a self number, because there is not a number n which added to its sum of digits gives 29840129242140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29840129242141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35523962964 + ... + 35523963803.

It is an arithmetic number, because the mean of its divisors is an integer number (1989341949504).

Almost surely, 2^{29840129242140} is an apocalyptic number.

29840129242140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29840129242140 is an abundant number, since it is smaller than the sum of its proper divisors (65648284334052).

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

29840129242140 is a wasteful number, since it uses less digits than its factorization.

29840129242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71047926786 (or 71047926784 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 29840129242140 in words is "twenty-nine trillion, eight hundred forty billion, one hundred twenty-nine million, two hundred forty-two thousand, one hundred forty".