1045445142 has 64 divisors (see below), whose sum is σ = 2472519168. Its totient is φ = 288480000.

The previous prime is 1045445129. The next prime is 1045445161. The reversal of 1045445142 is 2415445401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170917 + ... + 176927.

It is an arithmetic number, because the mean of its divisors is an integer number (38633112).

Almost surely, 2^1045445142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1045445142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236259584).

1045445142 is an abundant number, since it is smaller than the sum of its proper divisors (1427074026).

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

1045445142 is a wasteful number, since it uses less digits than its factorization.

1045445142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6165.

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 1045445142 is about 32333.3441202731. The cubic root of 1045445142 is about 1014.9245309382.

The spelling of 1045445142 in words is "one billion, forty-five million, four hundred forty-five thousand, one hundred forty-two".