84071315542 has 4 divisors (see below), whose sum is σ = 126106973316. Its totient is φ = 42035657770.

The previous prime is 84071315513. The next prime is 84071315543. The reversal of 84071315542 is 24551317048.

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

It is a junction number, because it is equal to n+sod(n) for n = 84071315495 and 84071315504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84071315543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21017828884 + ... + 21017828887.

It is an arithmetic number, because the mean of its divisors is an integer number (31526743329).

Almost surely, 2^84071315542 is an apocalyptic number.

84071315542 is a deficient number, since it is larger than the sum of its proper divisors (42035657774).

84071315542 is a wasteful number, since it uses less digits than its factorization.

84071315542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42035657773.

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 84071315542 in words is "eighty-four billion, seventy-one million, three hundred fifteen thousand, five hundred forty-two".