84542100929 has 12 divisors (see below), whose sum is σ = 100074631188. Its totient is φ = 70944419040.

The previous prime is 84542100917. The next prime is 84542100949. The reversal of 84542100929 is 92900124548.

It can be written as a sum of positive squares in 2 ways, for example, as 31586886529 + 52955214400 = 177727^2 + 230120^2 .

It is not a de Polignac number, because 84542100929 - 2¹² = 84542096833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84542100929.

It is not an unprimeable number, because it can be changed into a prime (84542100949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26871314 + ... + 26874459.

It is an arithmetic number, because the mean of its divisors is an integer number (8339552599).

Almost surely, 2^84542100929 is an apocalyptic number.

It is an amenable number.

84542100929 is a deficient number, since it is larger than the sum of its proper divisors (15532530259).

84542100929 is a wasteful number, since it uses less digits than its factorization.

84542100929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53745808 (or 53745797 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 84542100929 in words is "eighty-four billion, five hundred forty-two million, one hundred thousand, nine hundred twenty-nine".