42425100643 has 4 divisors (see below), whose sum is σ = 42836994928. Its totient is φ = 42013206360.

The previous prime is 42425100637. The next prime is 42425100661. The reversal of 42425100643 is 34600152424.

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

It is a cyclic number.

It is not a de Polignac number, because 42425100643 - 2⁵ = 42425100611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42425100343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205946988 + ... + 205947193.

It is an arithmetic number, because the mean of its divisors is an integer number (10709248732).

Almost surely, 2^42425100643 is an apocalyptic number.

42425100643 is a deficient number, since it is larger than the sum of its proper divisors (411894285).

42425100643 is a wasteful number, since it uses less digits than its factorization.

42425100643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411894284.

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 42425100643 in words is "forty-two billion, four hundred twenty-five million, one hundred thousand, six hundred forty-three".