42949422697 has 2 divisors, whose sum is σ = 42949422698. Its totient is φ = 42949422696.

The previous prime is 42949422679. The next prime is 42949422743. The reversal of 42949422697 is 79622494924.

Together with previous prime (42949422679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37647252841 + 5302169856 = 194029^2 + 72816^2 .

It is a cyclic number.

It is not a de Polignac number, because 42949422697 - 2²³ = 42941034089 is a prime.

It is not a weakly prime, because it can be changed into another prime (42949422667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21474711348 + 21474711349.

It is an arithmetic number, because the mean of its divisors is an integer number (21474711349).

Almost surely, 2^42949422697 is an apocalyptic number.

It is an amenable number.

42949422697 is a deficient number, since it is larger than the sum of its proper divisors (1).

42949422697 is an equidigital number, since it uses as much as digits as its factorization.

42949422697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 58.

The spelling of 42949422697 in words is "forty-two billion, nine hundred forty-nine million, four hundred twenty-two thousand, six hundred ninety-seven".