120405449 has 2 divisors, whose sum is σ = 120405450. Its totient is φ = 120405448.

The previous prime is 120405427. The next prime is 120405469. The reversal of 120405449 is 944504021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109725625 + 10679824 = 10475^2 + 3268^2 .

It is an emirp because it is prime and its reverse (944504021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120405449 - 2⁸ = 120405193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120405469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60202724 + 60202725.

It is an arithmetic number, because the mean of its divisors is an integer number (60202725).

Almost surely, 2^120405449 is an apocalyptic number.

It is an amenable number.

120405449 is a deficient number, since it is larger than the sum of its proper divisors (1).

120405449 is an equidigital number, since it uses as much as digits as its factorization.

120405449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 120405449 is about 10972.9416748655. The cubic root of 120405449 is about 493.7973032926.

The spelling of 120405449 in words is "one hundred twenty million, four hundred five thousand, four hundred forty-nine".