2154122045 has 8 divisors (see below), whose sum is σ = 2585197824. Its totient is φ = 1723130064.

The previous prime is 2154122011. The next prime is 2154122077. The reversal of 2154122045 is 5402214512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154122045 - 2¹⁸ = 2153859901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78752 + ... + 102518.

It is an arithmetic number, because the mean of its divisors is an integer number (323149728).

Almost surely, 2^2154122045 is an apocalyptic number.

It is an amenable number.

2154122045 is a deficient number, since it is larger than the sum of its proper divisors (431075779).

2154122045 is a wasteful number, since it uses less digits than its factorization.

2154122045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41899.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2154122045 is about 46412.5203474235. The cubic root of 2154122045 is about 1291.4871867350.

Adding to 2154122045 its reverse (5402214512), we get a palindrome (7556336557).

The spelling of 2154122045 in words is "two billion, one hundred fifty-four million, one hundred twenty-two thousand, forty-five".