2142207544 has 8 divisors (see below), whose sum is σ = 4016639160. Its totient is φ = 1071103768.

The previous prime is 2142207533. The next prime is 2142207607. The reversal of 2142207544 is 4457022412.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133887964 + ... + 133887979.

It is an arithmetic number, because the mean of its divisors is an integer number (502079895).

Almost surely, 2^2142207544 is an apocalyptic number.

It is an amenable number.

2142207544 is a deficient number, since it is larger than the sum of its proper divisors (1874431616).

2142207544 is a wasteful number, since it uses less digits than its factorization.

2142207544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267775949 (or 267775945 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 2142207544 is about 46283.9879872078. The cubic root of 2142207544 is about 1289.1017009921.

Adding to 2142207544 its reverse (4457022412), we get a palindrome (6599229956).

The spelling of 2142207544 in words is "two billion, one hundred forty-two million, two hundred seven thousand, five hundred forty-four".