2142428 has 6 divisors (see below), whose sum is σ = 3749256. Its totient is φ = 1071212.

The previous prime is 2142403. The next prime is 2142431. The reversal of 2142428 is 8242412.

It is a happy 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, 267800 + ... + 267807.

It is an arithmetic number, because the mean of its divisors is an integer number (624876).

2^2142428 is an apocalyptic number.

It is an amenable number.

2142428 is a deficient number, since it is larger than the sum of its proper divisors (1606828).

2142428 is a wasteful number, since it uses less digits than its factorization.

2142428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535611 (or 535609 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

The square root of 2142428 is about 1463.7035218923. The cubic root of 2142428 is about 128.9145920246.

The spelling of 2142428 in words is "two million, one hundred forty-two thousand, four hundred twenty-eight".