842900047 has 4 divisors (see below), whose sum is σ = 919527336. Its totient is φ = 766272760.

The previous prime is 842900041. The next prime is 842900063. The reversal of 842900047 is 740009248.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 842900047 - 2³ = 842900039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 842899985 and 842900021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842900041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38313628 + ... + 38313649.

It is an arithmetic number, because the mean of its divisors is an integer number (229881834).

Almost surely, 2^842900047 is an apocalyptic number.

842900047 is a deficient number, since it is larger than the sum of its proper divisors (76627289).

842900047 is a wasteful number, since it uses less digits than its factorization.

842900047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76627288.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 842900047 is about 29032.7409487978. The cubic root of 842900047 is about 944.6233849146.

The spelling of 842900047 in words is "eight hundred forty-two million, nine hundred thousand, forty-seven".