120445421 has 2 divisors, whose sum is σ = 120445422. Its totient is φ = 120445420.

The previous prime is 120445399. The next prime is 120445469. The reversal of 120445421 is 124544021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85470025 + 34975396 = 9245^2 + 5914^2 .

It is a cyclic number.

It is not a de Polignac number, because 120445421 - 2¹⁰ = 120444397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120445121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60222710 + 60222711.

It is an arithmetic number, because the mean of its divisors is an integer number (60222711).

Almost surely, 2^120445421 is an apocalyptic number.

It is an amenable number.

120445421 is a deficient number, since it is larger than the sum of its proper divisors (1).

120445421 is an equidigital number, since it uses as much as digits as its factorization.

120445421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 120445421 is about 10974.7629131567. The cubic root of 120445421 is about 493.8519405818.

Adding to 120445421 its reverse (124544021), we get a palindrome (244989442).

The spelling of 120445421 in words is "one hundred twenty million, four hundred forty-five thousand, four hundred twenty-one".