42950000642 has 16 divisors (see below), whose sum is σ = 68281573752. Its totient is φ = 20191952640.

The previous prime is 42950000641. The next prime is 42950000689. The reversal of 42950000642 is 24600005924.

It can be written as a sum of positive squares in 4 ways, for example, as 33251887201 + 9698113441 = 182351^2 + 98479^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42950000599 and 42950000608.

It is not an unprimeable number, because it can be changed into a prime (42950000641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583913 + ... + 653340.

Almost surely, 2^42950000642 is an apocalyptic number.

42950000642 is a deficient number, since it is larger than the sum of its proper divisors (25331573110).

42950000642 is a wasteful number, since it uses less digits than its factorization.

42950000642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238293.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 42950000642 in words is "forty-two billion, nine hundred fifty million, six hundred forty-two", and thus it is an aban number.