42604992061 has 4 divisors (see below), whose sum is σ = 42626012832. Its totient is φ = 42583971292.

The previous prime is 42604992049. The next prime is 42604992077. The reversal of 42604992061 is 16029940624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42604992061 - 2⁵ = 42604992029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42604991999 and 42604992017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42604992091) 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, 10507345 + ... + 10511398.

It is an arithmetic number, because the mean of its divisors is an integer number (10656503208).

Almost surely, 2^42604992061 is an apocalyptic number.

It is an amenable number.

42604992061 is a deficient number, since it is larger than the sum of its proper divisors (21020771).

42604992061 is a wasteful number, since it uses less digits than its factorization.

42604992061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21020770.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 42604992061 in words is "forty-two billion, six hundred four million, nine hundred ninety-two thousand, sixty-one".