842477945 has 8 divisors (see below), whose sum is σ = 1011137280. Its totient is φ = 673873200.

The previous prime is 842477939. The next prime is 842477981. The reversal of 842477945 is 549774248.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 842477945 - 2¹⁶ = 842412409 is a prime.

It is a super-2 number, since 2×842477945² = 1419538175622846050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 842477893 and 842477902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38270 + ... + 56120.

It is an arithmetic number, because the mean of its divisors is an integer number (126392160).

Almost surely, 2^842477945 is an apocalyptic number.

It is an amenable number.

842477945 is a deficient number, since it is larger than the sum of its proper divisors (168659335).

842477945 is a wasteful number, since it uses less digits than its factorization.

842477945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27295.

The product of its digits is 2257920, while the sum is 50.

The square root of 842477945 is about 29025.4706249528. The cubic root of 842477945 is about 944.4656778028.

The spelling of 842477945 in words is "eight hundred forty-two million, four hundred seventy-seven thousand, nine hundred forty-five".