8140142215402 has 8 divisors (see below), whose sum is σ = 12236931515556. Its totient is φ = 4061165043552.

The previous prime is 8140142215363. The next prime is 8140142215409. The reversal of 8140142215402 is 2045122410418.

It can be written as a sum of positive squares in 2 ways, for example, as 7942358331961 + 197783883441 = 2818219^2 + 444729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (8140142215409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4453030933 + ... + 4453032760.

Almost surely, 2^{8140142215402} is an apocalyptic number.

8140142215402 is a deficient number, since it is larger than the sum of its proper divisors (4096789300154).

8140142215402 is a wasteful number, since it uses less digits than its factorization.

8140142215402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8906064152.

The product of its (nonzero) digits is 20480, while the sum is 34.

The spelling of 8140142215402 in words is "eight trillion, one hundred forty billion, one hundred forty-two million, two hundred fifteen thousand, four hundred two".