842742651 has 8 divisors (see below), whose sum is σ = 1128983104. Its totient is φ = 559165320.

The previous prime is 842742631. The next prime is 842742679. The reversal of 842742651 is 156247248.

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

It is not a de Polignac number, because 842742651 - 2¹¹ = 842740603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842742631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665041 + ... + 666306.

It is an arithmetic number, because the mean of its divisors is an integer number (141122888).

Almost surely, 2^842742651 is an apocalyptic number.

842742651 is a deficient number, since it is larger than the sum of its proper divisors (286240453).

842742651 is a wasteful number, since it uses less digits than its factorization.

842742651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331561.

The product of its digits is 107520, while the sum is 39.

The square root of 842742651 is about 29030.0301584411. The cubic root of 842742651 is about 944.5645842702.

Adding to 842742651 its reverse (156247248), we get a palindrome (998989899).

The spelling of 842742651 in words is "eight hundred forty-two million, seven hundred forty-two thousand, six hundred fifty-one".