445391142 has 16 divisors (see below), whose sum is σ = 1018036992. Its totient is φ = 127254600.

The previous prime is 445391137. The next prime is 445391147. The reversal of 445391142 is 241193544.

It is an interprime number because it is at equal distance from previous prime (445391137) and next prime (445391147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445391147) 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, 5302234 + ... + 5302317.

It is an arithmetic number, because the mean of its divisors is an integer number (63627312).

Almost surely, 2^445391142 is an apocalyptic number.

445391142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

445391142 is an abundant number, since it is smaller than the sum of its proper divisors (572645850).

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

445391142 is a wasteful number, since it uses less digits than its factorization.

445391142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10604563.

The product of its digits is 17280, while the sum is 33.

The square root of 445391142 is about 21104.2920279265. The cubic root of 445391142 is about 763.6842931857.

The spelling of 445391142 in words is "four hundred forty-five million, three hundred ninety-one thousand, one hundred forty-two".