2154866242 has 8 divisors (see below), whose sum is σ = 3232512000. Its totient is φ = 1077362244.

The previous prime is 2154866239. The next prime is 2154866243. The reversal of 2154866242 is 2426684512.

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

It is a super-3 number, since 3×2154866242³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2154866195 and 2154866204.

It is not an unprimeable number, because it can be changed into a prime (2154866243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19759 + ... + 68557.

It is an arithmetic number, because the mean of its divisors is an integer number (404064000).

Almost surely, 2^2154866242 is an apocalyptic number.

2154866242 is a deficient number, since it is larger than the sum of its proper divisors (1077645758).

2154866242 is a wasteful number, since it uses less digits than its factorization.

2154866242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70880.

The product of its digits is 184320, while the sum is 40.

The square root of 2154866242 is about 46420.5368560080. The cubic root of 2154866242 is about 1291.6358954603.

The spelling of 2154866242 in words is "two billion, one hundred fifty-four million, eight hundred sixty-six thousand, two hundred forty-two".