42400648115123 has 2 divisors, whose sum is σ = 42400648115124. Its totient is φ = 42400648115122.

The previous prime is 42400648115099. The next prime is 42400648115131. The reversal of 42400648115123 is 32151184600424.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42400648115123 - 2³⁴ = 42383468245939 is a prime.

It is a super-2 number, since 2×42400648115123² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42400648111123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21200324057561 + 21200324057562.

It is an arithmetic number, because the mean of its divisors is an integer number (21200324057562).

Almost surely, 2^{42400648115123} is an apocalyptic number.

42400648115123 is a deficient number, since it is larger than the sum of its proper divisors (1).

42400648115123 is an equidigital number, since it uses as much as digits as its factorization.

42400648115123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 42400648115123 in words is "forty-two trillion, four hundred billion, six hundred forty-eight million, one hundred fifteen thousand, one hundred twenty-three".