120406340621 has 16 divisors (see below), whose sum is σ = 138919052160. Its totient is φ = 102221939520.

The previous prime is 120406340609. The next prime is 120406340629. The reversal of 120406340621 is 126043604021.

It is a cyclic number.

It is not a de Polignac number, because 120406340621 - 2¹⁴ = 120406324237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120406340629) 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, 5283311 + ... + 5306051.

It is an arithmetic number, because the mean of its divisors is an integer number (8682440760).

Almost surely, 2^120406340621 is an apocalyptic number.

It is an amenable number.

120406340621 is a deficient number, since it is larger than the sum of its proper divisors (18512711539).

120406340621 is a wasteful number, since it uses less digits than its factorization.

120406340621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29924.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 120406340621 its reverse (126043604021), we get a palindrome (246449944642).

The spelling of 120406340621 in words is "one hundred twenty billion, four hundred six million, three hundred forty thousand, six hundred twenty-one".