8451442 has 16 divisors (see below), whose sum is σ = 13296960. Its totient is φ = 4021072.

The previous prime is 8451439. The next prime is 8451449. The reversal of 8451442 is 2441548.

It is a self number, because there is not a number n which added to its sum of digits gives 8451442.

It is not an unprimeable number, because it can be changed into a prime (8451449) 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 7 ways as a sum of consecutive naturals, for example, 12033 + ... + 12715.

It is an arithmetic number, because the mean of its divisors is an integer number (831060).

Almost surely, 2^8451442 is an apocalyptic number.

8451442 is a deficient number, since it is larger than the sum of its proper divisors (4845518).

8451442 is a wasteful number, since it uses less digits than its factorization.

8451442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977.

The product of its digits is 5120, while the sum is 28.

The square root of 8451442 is about 2907.1363917092. The cubic root of 8451442 is about 203.6933911261.

The spelling of 8451442 in words is "eight million, four hundred fifty-one thousand, four hundred forty-two".