1042428 has 12 divisors (see below), whose sum is σ = 2432360. Its totient is φ = 347472.

The previous prime is 1042427. The next prime is 1042439. The reversal of 1042428 is 8242401.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1042428² = 2173312270368, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43423 + ... + 43446.

2^1042428 is an apocalyptic number.

It is an amenable number.

1042428 is an abundant number, since it is smaller than the sum of its proper divisors (1389932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1042428 is a wasteful number, since it uses less digits than its factorization.

1042428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86876 (or 86874 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1042428 is about 1020.9936336726. The cubic root of 1042428 is about 101.3947236886.

Adding to 1042428 its reverse (8242401), we get a palindrome (9284829).

The spelling of 1042428 in words is "one million, forty-two thousand, four hundred twenty-eight".