842239051 has 4 divisors (see below), whose sum is σ = 850110552. Its totient is φ = 834367552.

The previous prime is 842239037. The next prime is 842239061. The reversal of 842239051 is 150932248.

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

It is a cyclic number.

It is not a de Polignac number, because 842239051 - 2⁷ = 842238923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 842238998 and 842239016.

It is not an unprimeable number, because it can be changed into a prime (842239061) 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, 3935590 + ... + 3935803.

It is an arithmetic number, because the mean of its divisors is an integer number (212527638).

Almost surely, 2^842239051 is an apocalyptic number.

842239051 is a deficient number, since it is larger than the sum of its proper divisors (7871501).

842239051 is a wasteful number, since it uses less digits than its factorization.

842239051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871500.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 842239051 is about 29021.3550855228. The cubic root of 842239051 is about 944.3763981112.

The spelling of 842239051 in words is "eight hundred forty-two million, two hundred thirty-nine thousand, fifty-one".