42155650 has 12 divisors (see below), whose sum is σ = 78409602. Its totient is φ = 16862240.

The previous prime is 42155621. The next prime is 42155653. The reversal of 42155650 is 5655124.

It can be written as a sum of positive squares in 3 ways, for example, as 34421689 + 7733961 = 5867^2 + 2781^2 .

It is not an unprimeable number, because it can be changed into a prime (42155653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 421507 + ... + 421606.

Almost surely, 2^42155650 is an apocalyptic number.

42155650 is a deficient number, since it is larger than the sum of its proper divisors (36253952).

42155650 is a wasteful number, since it uses less digits than its factorization.

42155650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843125 (or 843120 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 42155650 is about 6492.7382513081. The cubic root of 42155650 is about 348.0315347739.

The spelling of 42155650 in words is "forty-two million, one hundred fifty-five thousand, six hundred fifty".