120400141340421 has 48 divisors (see below), whose sum is σ = 178884347936112. Its totient is φ = 77987956147200.

The previous prime is 120400141340407. The next prime is 120400141340467. The reversal of 120400141340421 is 124043141004021.

120400141340421 is a `hidden beast` number, since 1 + 20 + 40 + 0 + 141 + 3 + 40 + 421 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 19180142876196 + 101219998464225 = 4379514^2 + 10060815^2 .

It is not a de Polignac number, because 120400141340421 - 2⁶ = 120400141340357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120400141340021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156710791 + ... + 157477211.

It is an arithmetic number, because the mean of its divisors is an integer number (3726757248669).

Almost surely, 2^{120400141340421} is an apocalyptic number.

It is an amenable number.

120400141340421 is a deficient number, since it is larger than the sum of its proper divisors (58484206595691).

120400141340421 is a wasteful number, since it uses less digits than its factorization.

120400141340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768214 (or 768211 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 120400141340421 its reverse (124043141004021), we get a palindrome (244443282344442).

The spelling of 120400141340421 in words is "one hundred twenty trillion, four hundred billion, one hundred forty-one million, three hundred forty thousand, four hundred twenty-one".