2142400424 has 8 divisors (see below), whose sum is σ = 4017000810. Its totient is φ = 1071200208.

The previous prime is 2142400417. The next prime is 2142400427. The reversal of 2142400424 is 4240042412.

It can be written as a sum of positive squares in only one way, i.e., 2068612324 + 73788100 = 45482^2 + 8590^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2142400424.

It is not an unprimeable number, because it can be changed into a prime (2142400427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133900019 + ... + 133900034.

Almost surely, 2^2142400424 is an apocalyptic number.

It is an amenable number.

2142400424 is a deficient number, since it is larger than the sum of its proper divisors (1874600386).

2142400424 is a wasteful number, since it uses less digits than its factorization.

2142400424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267800059 (or 267800055 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 2142400424 is about 46286.0715982681. The cubic root of 2142400424 is about 1289.1403891940.

Adding to 2142400424 its reverse (4240042412), we get a palindrome (6382442836).

The spelling of 2142400424 in words is "two billion, one hundred forty-two million, four hundred thousand, four hundred twenty-four".