42724906031 has 2 divisors, whose sum is σ = 42724906032. Its totient is φ = 42724906030.

The previous prime is 42724906027. The next prime is 42724906069. The reversal of 42724906031 is 13060942724.

It is an a-pointer prime, because the next prime (42724906069) can be obtained adding 42724906031 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42724906031 - 2² = 42724906027 is a prime.

It is a super-2 number, since 2×42724906031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42724956031) 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, 21362453015 + 21362453016.

It is an arithmetic number, because the mean of its divisors is an integer number (21362453016).

Almost surely, 2^42724906031 is an apocalyptic number.

42724906031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42724906031 is an equidigital number, since it uses as much as digits as its factorization.

42724906031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 42724906031 in words is "forty-two billion, seven hundred twenty-four million, nine hundred six thousand, thirty-one".