42049478953 has 2 divisors, whose sum is σ = 42049478954. Its totient is φ = 42049478952.

The previous prime is 42049478897. The next prime is 42049479013. The reversal of 42049478953 is 35987494024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34087129129 + 7962349824 = 184627^2 + 89232^2 .

It is a cyclic number.

It is not a de Polignac number, because 42049478953 - 2¹³ = 42049470761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42049478894 and 42049478903.

It is not a weakly prime, because it can be changed into another prime (42049475953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21024739476 + 21024739477.

It is an arithmetic number, because the mean of its divisors is an integer number (21024739477).

Almost surely, 2^42049478953 is an apocalyptic number.

It is an amenable number.

42049478953 is a deficient number, since it is larger than the sum of its proper divisors (1).

42049478953 is an equidigital number, since it uses as much as digits as its factorization.

42049478953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 42049478953 in words is "forty-two billion, forty-nine million, four hundred seventy-eight thousand, nine hundred fifty-three".