120706521 has 16 divisors (see below), whose sum is σ = 173537280. Its totient is φ = 74188800.

The previous prime is 120706519. The next prime is 120706561. The reversal of 120706521 is 125607021.

It is not a de Polignac number, because 120706521 - 2¹ = 120706519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120706491 and 120706500.

It is not an unprimeable number, because it can be changed into a prime (120706561) 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, 43545 + ... + 46233.

It is an arithmetic number, because the mean of its divisors is an integer number (10846080).

Almost surely, 2^120706521 is an apocalyptic number.

It is an amenable number.

120706521 is a deficient number, since it is larger than the sum of its proper divisors (52830759).

120706521 is a wasteful number, since it uses less digits than its factorization.

120706521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 120706521 is about 10986.6519467943. The cubic root of 120706521 is about 494.2085382777.

The spelling of 120706521 in words is "one hundred twenty million, seven hundred six thousand, five hundred twenty-one".