120442457 has 2 divisors, whose sum is σ = 120442458. Its totient is φ = 120442456.

The previous prime is 120442453. The next prime is 120442489. The reversal of 120442457 is 754244021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78659161 + 41783296 = 8869^2 + 6464^2 .

It is an emirp because it is prime and its reverse (754244021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120442457 - 2² = 120442453 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120442453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60221228 + 60221229.

It is an arithmetic number, because the mean of its divisors is an integer number (60221229).

Almost surely, 2^120442457 is an apocalyptic number.

It is an amenable number.

120442457 is a deficient number, since it is larger than the sum of its proper divisors (1).

120442457 is an equidigital number, since it uses as much as digits as its factorization.

120442457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 120442457 is about 10974.6278752402. The cubic root of 120442457 is about 493.8478895376.

Adding to 120442457 its reverse (754244021), we get a palindrome (874686478).

The spelling of 120442457 in words is "one hundred twenty million, four hundred forty-two thousand, four hundred fifty-seven".