42042211306 has 4 divisors (see below), whose sum is σ = 63063316962. Its totient is φ = 21021105652.

The previous prime is 42042211279. The next prime is 42042211307. The reversal of 42042211306 is 60311224024.

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 only one way, i.e., 23667053281 + 18375158025 = 153841^2 + 135555^2 .

It is not an unprimeable number, because it can be changed into a prime (42042211307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510552825 + ... + 10510552828.

Almost surely, 2^42042211306 is an apocalyptic number.

42042211306 is a deficient number, since it is larger than the sum of its proper divisors (21021105656).

42042211306 is a wasteful number, since it uses less digits than its factorization.

42042211306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21021105655.

The product of its (nonzero) digits is 2304, while the sum is 25.

The spelling of 42042211306 in words is "forty-two billion, forty-two million, two hundred eleven thousand, three hundred six".