8140815542 has 16 divisors (see below), whose sum is σ = 12372080640. Its totient is φ = 4016841192.

The previous prime is 8140815541. The next prime is 8140815547. The reversal of 8140815542 is 2455180418.

It is a junction number, because it is equal to n+sod(n) for n = 8140815496 and 8140815505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140815541) 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, 326573 + ... + 350615.

It is an arithmetic number, because the mean of its divisors is an integer number (773255040).

Almost surely, 2^8140815542 is an apocalyptic number.

8140815542 is a deficient number, since it is larger than the sum of its proper divisors (4231265098).

8140815542 is a wasteful number, since it uses less digits than its factorization.

8140815542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26267.

The product of its (nonzero) digits is 51200, while the sum is 38.

The square root of 8140815542 is about 90226.4680789401. The cubic root of 8140815542 is about 2011.6664432286. Note that the first 3 decimals are identical.

The spelling of 8140815542 in words is "eight billion, one hundred forty million, eight hundred fifteen thousand, five hundred forty-two".