842777252 has 6 divisors (see below), whose sum is σ = 1474860198. Its totient is φ = 421388624.

The previous prime is 842777239. The next prime is 842777267. The reversal of 842777252 is 252777248.

It can be written as a sum of positive squares in only one way, i.e., 839029156 + 3748096 = 28966^2 + 1936^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105347153 + ... + 105347160.

It is an arithmetic number, because the mean of its divisors is an integer number (245810033).

Almost surely, 2^842777252 is an apocalyptic number.

It is an amenable number.

842777252 is a deficient number, since it is larger than the sum of its proper divisors (632082946).

842777252 is a wasteful number, since it uses less digits than its factorization.

842777252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210694317 (or 210694315 counting only the distinct ones).

The product of its digits is 439040, while the sum is 44.

The square root of 842777252 is about 29030.6261041680. The cubic root of 842777252 is about 944.5775112818.

The spelling of 842777252 in words is "eight hundred forty-two million, seven hundred seventy-seven thousand, two hundred fifty-two".