2155166042 has 8 divisors (see below), whose sum is σ = 3287541600. Its totient is φ = 1059318844.

The previous prime is 2155166023. The next prime is 2155166077. The reversal of 2155166042 is 2406615512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9131942 + ... + 9132177.

It is an arithmetic number, because the mean of its divisors is an integer number (410942700).

Almost surely, 2^2155166042 is an apocalyptic number.

2155166042 is a deficient number, since it is larger than the sum of its proper divisors (1132375558).

2155166042 is a wasteful number, since it uses less digits than its factorization.

2155166042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18264180.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2155166042 is about 46423.7659179003. The cubic root of 2155166042 is about 1291.6957931432.

The spelling of 2155166042 in words is "two billion, one hundred fifty-five million, one hundred sixty-six thousand, forty-two".