2142554771 has 16 divisors (see below), whose sum is σ = 2536477440. Its totient is φ = 1770763680.

The previous prime is 2142554759. The next prime is 2142554837. The reversal of 2142554771 is 1774552412.

It is a happy number.

It is not a de Polignac number, because 2142554771 - 2⁶ = 2142554707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2142554731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153056 + ... + 166466.

It is an arithmetic number, because the mean of its divisors is an integer number (158529840).

Almost surely, 2^2142554771 is an apocalyptic number.

2142554771 is a deficient number, since it is larger than the sum of its proper divisors (393922669).

2142554771 is a wasteful number, since it uses less digits than its factorization.

2142554771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14234.

The product of its digits is 78400, while the sum is 38.

The square root of 2142554771 is about 46287.7388840717. The cubic root of 2142554771 is about 1289.1713467080.

The spelling of 2142554771 in words is "two billion, one hundred forty-two million, five hundred fifty-four thousand, seven hundred seventy-one".