42678298451 has 2 divisors, whose sum is σ = 42678298452. Its totient is φ = 42678298450.

The previous prime is 42678298433. The next prime is 42678298483. The reversal of 42678298451 is 15489287624.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42678298451 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42678298051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21339149225 + 21339149226.

It is an arithmetic number, because the mean of its divisors is an integer number (21339149226).

Almost surely, 2^42678298451 is an apocalyptic number.

42678298451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42678298451 is an equidigital number, since it uses as much as digits as its factorization.

42678298451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 56.

The spelling of 42678298451 in words is "forty-two billion, six hundred seventy-eight million, two hundred ninety-eight thousand, four hundred fifty-one".