42550031401 has 2 divisors, whose sum is σ = 42550031402. Its totient is φ = 42550031400.

The previous prime is 42550031387. The next prime is 42550031431. The reversal of 42550031401 is 10413005524.

It is a happy number.

42550031401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31862607001 + 10687424400 = 178501^2 + 103380^2 .

It is a cyclic number.

It is not a de Polignac number, because 42550031401 - 2¹⁷ = 42549900329 is a prime.

It is not a weakly prime, because it can be changed into another prime (42550031431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21275015700 + 21275015701.

It is an arithmetic number, because the mean of its divisors is an integer number (21275015701).

Almost surely, 2^42550031401 is an apocalyptic number.

It is an amenable number.

42550031401 is a deficient number, since it is larger than the sum of its proper divisors (1).

42550031401 is an equidigital number, since it uses as much as digits as its factorization.

42550031401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 42550031401 its reverse (10413005524), we get a palindrome (52963036925).

The spelling of 42550031401 in words is "forty-two billion, five hundred fifty million, thirty-one thousand, four hundred one".