120029681 has 4 divisors (see below), whose sum is σ = 122583552. Its totient is φ = 117475812.

The previous prime is 120029647. The next prime is 120029687. The reversal of 120029681 is 186920021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186920021 = 3329 ⋅56149.

It is a cyclic number.

It is not a de Polignac number, because 120029681 - 2¹⁸ = 119767537 is a prime.

It is a super-2 number, since 2×120029681² = 28814248641923522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120029687) 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, 1276865 + ... + 1276958.

It is an arithmetic number, because the mean of its divisors is an integer number (30645888).

Almost surely, 2^120029681 is an apocalyptic number.

It is an amenable number.

120029681 is a deficient number, since it is larger than the sum of its proper divisors (2553871).

120029681 is an equidigital number, since it uses as much as digits as its factorization.

120029681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553870.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 120029681 is about 10955.8058124448. The cubic root of 120029681 is about 493.2830779807.

The spelling of 120029681 in words is "one hundred twenty million, twenty-nine thousand, six hundred eighty-one".