842540102 has 16 divisors (see below), whose sum is σ = 1289056032. Its totient is φ = 412923840.

The previous prime is 842540087. The next prime is 842540107. The reversal of 842540102 is 201045248.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842540107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7418 + ... + 41714.

It is an arithmetic number, because the mean of its divisors is an integer number (80566002).

Almost surely, 2^842540102 is an apocalyptic number.

842540102 is a deficient number, since it is larger than the sum of its proper divisors (446515930).

842540102 is a wasteful number, since it uses less digits than its factorization.

842540102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34543.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 842540102 is about 29026.5413371969. The cubic root of 842540102 is about 944.4889044086.

The spelling of 842540102 in words is "eight hundred forty-two million, five hundred forty thousand, one hundred two".