120405456827 has 8 divisors (see below), whose sum is σ = 127579284000. Its totient is φ = 113241757824.

The previous prime is 120405456799. The next prime is 120405456839. The reversal of 120405456827 is 728654504021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120405456827 - 2¹⁶ = 120405391291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120405456427) 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, 2507552 + ... + 2555117.

It is an arithmetic number, because the mean of its divisors is an integer number (15947410500).

Almost surely, 2^120405456827 is an apocalyptic number.

120405456827 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

120405456827 is a deficient number, since it is larger than the sum of its proper divisors (7173827173).

120405456827 is a wasteful number, since it uses less digits than its factorization.

120405456827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064085.

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 120405456827 in words is "one hundred twenty billion, four hundred five million, four hundred fifty-six thousand, eight hundred twenty-seven".