842578077 has 16 divisors (see below), whose sum is σ = 1254071808. Its totient is φ = 498776880.

The previous prime is 842578073. The next prime is 842578127. The reversal of 842578077 is 770875248.

It is a happy number.

842578077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 842578077 - 2² = 842578073 is a prime.

It is a super-4 number, since 4×842578077⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842578073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295473 + ... + 298310.

It is an arithmetic number, because the mean of its divisors is an integer number (78379488).

Almost surely, 2^842578077 is an apocalyptic number.

It is an amenable number.

842578077 is a deficient number, since it is larger than the sum of its proper divisors (411493731).

842578077 is a wasteful number, since it uses less digits than its factorization.

842578077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593840.

The product of its (nonzero) digits is 878080, while the sum is 48.

The square root of 842578077 is about 29027.1954725220. The cubic root of 842578077 is about 944.5030942089.

The spelling of 842578077 in words is "eight hundred forty-two million, five hundred seventy-eight thousand, seventy-seven".