42120140453 has 2 divisors, whose sum is σ = 42120140454. Its totient is φ = 42120140452.

The previous prime is 42120140371. The next prime is 42120140477. The reversal of 42120140453 is 35404102124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37030459489 + 5089680964 = 192433^2 + 71342^2 .

It is a cyclic number.

It is not a de Polignac number, because 42120140453 - 2⁸ = 42120140197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42120140483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060070226 + 21060070227.

It is an arithmetic number, because the mean of its divisors is an integer number (21060070227).

Almost surely, 2^42120140453 is an apocalyptic number.

It is an amenable number.

42120140453 is a deficient number, since it is larger than the sum of its proper divisors (1).

42120140453 is an equidigital number, since it uses as much as digits as its factorization.

42120140453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 42120140453 its reverse (35404102124), we get a palindrome (77524242577).

The spelling of 42120140453 in words is "forty-two billion, one hundred twenty million, one hundred forty thousand, four hundred fifty-three".