120438919 has 2 divisors, whose sum is σ = 120438920. Its totient is φ = 120438918.

The previous prime is 120438917. The next prime is 120438947. The reversal of 120438919 is 919834021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120438919 - 2¹ = 120438917 is a prime.

It is a super-2 number, since 2×120438919² = 29011066419777122, which contains 22 as substring.

Together with 120438917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120438917) 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 as a sum of consecutive naturals, namely, 60219459 + 60219460.

It is an arithmetic number, because the mean of its divisors is an integer number (60219460).

Almost surely, 2^120438919 is an apocalyptic number.

120438919 is a deficient number, since it is larger than the sum of its proper divisors (1).

120438919 is an equidigital number, since it uses as much as digits as its factorization.

120438919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 120438919 is about 10974.4666840808. The cubic root of 120438919 is about 493.8430538925.

The spelling of 120438919 in words is "one hundred twenty million, four hundred thirty-eight thousand, nine hundred nineteen".