842745380 has 48 divisors (see below), whose sum is σ = 1894536000. Its totient is φ = 313934976.

The previous prime is 842745353. The next prime is 842745443. The reversal of 842745380 is 83547248.

It is a super-2 number, since 2×842745380² = 1420439551022688800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3626 + ... + 41214.

It is an arithmetic number, because the mean of its divisors is an integer number (39469500).

Almost surely, 2^842745380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842745380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947268000).

842745380 is an abundant number, since it is smaller than the sum of its proper divisors (1051790620).

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

842745380 is a wasteful number, since it uses less digits than its factorization.

842745380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37676 (or 37674 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 842745380 is about 29030.0771614545. The cubic root of 842745380 is about 944.5656038436.

The spelling of 842745380 in words is "eight hundred forty-two million, seven hundred forty-five thousand, three hundred eighty".