120783081 has 4 divisors (see below), whose sum is σ = 161044112. Its totient is φ = 80522052.

The previous prime is 120783043. The next prime is 120783107. The reversal of 120783081 is 180387021.

It is a happy number.

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 not a de Polignac number, because 120783081 - 2²⁶ = 53674217 is a prime.

It is a super-2 number, since 2×120783081² = 29177105311705122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120785081) 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, 20130511 + ... + 20130516.

It is an arithmetic number, because the mean of its divisors is an integer number (40261028).

Almost surely, 2^120783081 is an apocalyptic number.

It is an amenable number.

120783081 is a deficient number, since it is larger than the sum of its proper divisors (40261031).

120783081 is an equidigital number, since it uses as much as digits as its factorization.

120783081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40261030.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 120783081 is about 10990.1356224571. The cubic root of 120783081 is about 494.3130026947.

The spelling of 120783081 in words is "one hundred twenty million, seven hundred eighty-three thousand, eighty-one".