120781873 has 2 divisors, whose sum is σ = 120781874. Its totient is φ = 120781872.

The previous prime is 120781823. The next prime is 120781943. The reversal of 120781873 is 378187021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97278769 + 23503104 = 9863^2 + 4848^2 .

It is a cyclic number.

It is not a de Polignac number, because 120781873 - 2⁹ = 120781361 is a prime.

It is not a weakly prime, because it can be changed into another prime (120781823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60390936 + 60390937.

It is an arithmetic number, because the mean of its divisors is an integer number (60390937).

Almost surely, 2^120781873 is an apocalyptic number.

It is an amenable number.

120781873 is a deficient number, since it is larger than the sum of its proper divisors (1).

120781873 is an equidigital number, since it uses as much as digits as its factorization.

120781873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 120781873 is about 10990.0806639442. The cubic root of 120781873 is about 494.3113547483.

It can be divided in two parts, 1207 and 81873, that multiplied together give a triangular number (98820711 = T₁₄₀₅₈).

The spelling of 120781873 in words is "one hundred twenty million, seven hundred eighty-one thousand, eight hundred seventy-three".