2154545242 has 8 divisors (see below), whose sum is σ = 3401913600. Its totient is φ = 1020574044.

The previous prime is 2154545219. The next prime is 2154545249. The reversal of 2154545242 is 2425454512.

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

It is a junction number, because it is equal to n+sod(n) for n = 2154545198 and 2154545207.

It is not an unprimeable number, because it can be changed into a prime (2154545249) 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, 28349242 + ... + 28349317.

It is an arithmetic number, because the mean of its divisors is an integer number (425239200).

Almost surely, 2^2154545242 is an apocalyptic number.

2154545242 is a deficient number, since it is larger than the sum of its proper divisors (1247368358).

2154545242 is a wasteful number, since it uses less digits than its factorization.

2154545242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56698580.

The product of its digits is 64000, while the sum is 34.

The square root of 2154545242 is about 46417.0792058268. The cubic root of 2154545242 is about 1291.5717560249.

Adding to 2154545242 its reverse (2425454512), we get a palindrome (4579999754).

The spelling of 2154545242 in words is "two billion, one hundred fifty-four million, five hundred forty-five thousand, two hundred forty-two".