2142424 has 8 divisors (see below), whose sum is σ = 4017060. Its totient is φ = 1071208.

The previous prime is 2142403. The next prime is 2142431. The reversal of 2142424 is 4242412.

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

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

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, 133894 + ... + 133909.

2^2142424 is an apocalyptic number.

It is an amenable number.

2142424 is a deficient number, since it is larger than the sum of its proper divisors (1874636).

2142424 is a wasteful number, since it uses less digits than its factorization.

2142424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267809 (or 267805 counting only the distinct ones).

The product of its digits is 512, while the sum is 19.

The square root of 2142424 is about 1463.7021554948. The cubic root of 2142424 is about 128.9145117949.

Adding to 2142424 its reverse (4242412), we get a palindrome (6384836).

The spelling of 2142424 in words is "two million, one hundred forty-two thousand, four hundred twenty-four".