1025442 has 24 divisors (see below), whose sum is σ = 2424240. Its totient is φ = 310680.

The previous prime is 1025419. The next prime is 1025443. The reversal of 1025442 is 2445201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1025443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2392 + ... + 2787.

It is an arithmetic number, because the mean of its divisors is an integer number (101010).

2^1025442 is an apocalyptic number.

1025442 is an abundant number, since it is smaller than the sum of its proper divisors (1398798).

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

1025442 is a wasteful number, since it uses less digits than its factorization.

1025442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198 (or 5195 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1025442 is about 1012.6411012792. The cubic root of 1025442 is about 100.8409744606.

It can be divided in two parts, 10254 and 42, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 1025442 in words is "one million, twenty-five thousand, four hundred forty-two".