42678743 has 2 divisors, whose sum is σ = 42678744. Its totient is φ = 42678742.

The previous prime is 42678737. The next prime is 42678751. The reversal of 42678743 is 34787624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42678743 - 2⁸ = 42678487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42678743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42678763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21339371 + 21339372.

It is an arithmetic number, because the mean of its divisors is an integer number (21339372).

Almost surely, 2^42678743 is an apocalyptic number.

42678743 is a deficient number, since it is larger than the sum of its proper divisors (1).

42678743 is an equidigital number, since it uses as much as digits as its factorization.

42678743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 41.

The square root of 42678743 is about 6532.8969837278. The cubic root of 42678743 is about 349.4651504374.

The spelling of 42678743 in words is "forty-two million, six hundred seventy-eight thousand, seven hundred forty-three".