42365425789 has 4 divisors (see below), whose sum is σ = 42420518140. Its totient is φ = 42310333440.

The previous prime is 42365425787. The next prime is 42365425819. The reversal of 42365425789 is 98752456324.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12277748025 + 30087677764 = 110805^2 + 173458^2 .

It is a cyclic number.

It is not a de Polignac number, because 42365425789 - 2¹ = 42365425787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42365425787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27545022 + ... + 27546559.

It is an arithmetic number, because the mean of its divisors is an integer number (10605129535).

Almost surely, 2^42365425789 is an apocalyptic number.

It is an amenable number.

42365425789 is a deficient number, since it is larger than the sum of its proper divisors (55092351).

42365425789 is an equidigital number, since it uses as much as digits as its factorization.

42365425789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55092350.

The product of its digits is 14515200, while the sum is 55.

The spelling of 42365425789 in words is "forty-two billion, three hundred sixty-five million, four hundred twenty-five thousand, seven hundred eighty-nine".