42154333066 has 4 divisors (see below), whose sum is σ = 63231499602. Its totient is φ = 21077166532.

The previous prime is 42154333057. The next prime is 42154333079. The reversal of 42154333066 is 66033345124.

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., 40977500041 + 1176833025 = 202429^2 + 34305^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10538583265 + ... + 10538583268.

Almost surely, 2^42154333066 is an apocalyptic number.

42154333066 is a deficient number, since it is larger than the sum of its proper divisors (21077166536).

42154333066 is a wasteful number, since it uses less digits than its factorization.

42154333066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21077166535.

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 42154333066 in words is "forty-two billion, one hundred fifty-four million, three hundred thirty-three thousand, sixty-six".