42734726417 has 2 divisors, whose sum is σ = 42734726418. Its totient is φ = 42734726416.

The previous prime is 42734726401. The next prime is 42734726449. The reversal of 42734726417 is 71462743724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31825132816 + 10909593601 = 178396^2 + 104449^2 .

It is a cyclic number.

It is not a de Polignac number, because 42734726417 - 2⁴ = 42734726401 is a prime.

It is not a weakly prime, because it can be changed into another prime (42734723417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21367363208 + 21367363209.

It is an arithmetic number, because the mean of its divisors is an integer number (21367363209).

Almost surely, 2^42734726417 is an apocalyptic number.

It is an amenable number.

42734726417 is a deficient number, since it is larger than the sum of its proper divisors (1).

42734726417 is an equidigital number, since it uses as much as digits as its factorization.

42734726417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1580544, while the sum is 47.

The spelling of 42734726417 in words is "forty-two billion, seven hundred thirty-four million, seven hundred twenty-six thousand, four hundred seventeen".