42909210562 has 4 divisors (see below), whose sum is σ = 64363815846. Its totient is φ = 21454605280.

The previous prime is 42909210499. The next prime is 42909210563. The reversal of 42909210562 is 26501290924.

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

It can be written as a sum of positive squares in only one way, i.e., 42816300241 + 92910321 = 206921^2 + 9639^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42909210563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10727302639 + ... + 10727302642.

Almost surely, 2^42909210562 is an apocalyptic number.

42909210562 is a deficient number, since it is larger than the sum of its proper divisors (21454605284).

42909210562 is a wasteful number, since it uses less digits than its factorization.

42909210562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21454605283.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 42909210562 in words is "forty-two billion, nine hundred nine million, two hundred ten thousand, five hundred sixty-two".