87134542 has 16 divisors (see below), whose sum is σ = 142866864. Its totient is φ = 39528000.

The previous prime is 87134497. The next prime is 87134543. The reversal of 87134542 is 24543178.

It is a junction number, because it is equal to n+sod(n) for n = 87134498 and 87134507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87134543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8242 + ... + 15562.

It is an arithmetic number, because the mean of its divisors is an integer number (8929179).

Almost surely, 2^87134542 is an apocalyptic number.

87134542 is a deficient number, since it is larger than the sum of its proper divisors (55732322).

87134542 is a wasteful number, since it uses less digits than its factorization.

87134542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7875.

The product of its digits is 26880, while the sum is 34.

The square root of 87134542 is about 9334.5884751284. The cubic root of 87134542 is about 443.3330590887. Note that the first 3 decimals are identical.

The spelling of 87134542 in words is "eighty-seven million, one hundred thirty-four thousand, five hundred forty-two".