120646427 has 4 divisors (see below), whose sum is σ = 131614296. Its totient is φ = 109678560.

The previous prime is 120646397. The next prime is 120646453. The reversal of 120646427 is 724646021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724646021 = 11 ⋅65876911.

It is a cyclic number.

It is not a de Polignac number, because 120646427 - 2⁶ = 120646363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120646393 and 120646402.

It is not an unprimeable number, because it can be changed into a prime (120646457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5483918 + ... + 5483939.

It is an arithmetic number, because the mean of its divisors is an integer number (32903574).

Almost surely, 2^120646427 is an apocalyptic number.

120646427 is a deficient number, since it is larger than the sum of its proper divisors (10967869).

120646427 is a wasteful number, since it uses less digits than its factorization.

120646427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10967868.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 120646427 is about 10983.9167422191. The cubic root of 120646427 is about 494.1265104038.

The spelling of 120646427 in words is "one hundred twenty million, six hundred forty-six thousand, four hundred twenty-seven".