120142993 has 4 divisors (see below), whose sum is σ = 121936240. Its totient is φ = 118349748.

The previous prime is 120142991. The next prime is 120143003. The reversal of 120142993 is 399241021.

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.

It is a cyclic number.

It is not a de Polignac number, because 120142993 - 2¹ = 120142991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120142991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896523 + ... + 896656.

It is an arithmetic number, because the mean of its divisors is an integer number (30484060).

Almost surely, 2^120142993 is an apocalyptic number.

It is an amenable number.

120142993 is a deficient number, since it is larger than the sum of its proper divisors (1793247).

120142993 is an equidigital number, since it uses as much as digits as its factorization.

120142993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793246.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 120142993 is about 10960.9759145799. The cubic root of 120142993 is about 493.4382543560.

The spelling of 120142993 in words is "one hundred twenty million, one hundred forty-two thousand, nine hundred ninety-three".