42672305497 has 2 divisors, whose sum is σ = 42672305498. Its totient is φ = 42672305496.

The previous prime is 42672305491. The next prime is 42672305539. The reversal of 42672305497 is 79450327624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25883661456 + 16788644041 = 160884^2 + 129571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42672305497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42672305497.

It is not a weakly prime, because it can be changed into another prime (42672305491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21336152748 + 21336152749.

It is an arithmetic number, because the mean of its divisors is an integer number (21336152749).

Almost surely, 2^42672305497 is an apocalyptic number.

It is an amenable number.

42672305497 is a deficient number, since it is larger than the sum of its proper divisors (1).

42672305497 is an equidigital number, since it uses as much as digits as its factorization.

42672305497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 42672305497 in words is "forty-two billion, six hundred seventy-two million, three hundred five thousand, four hundred ninety-seven".