42135378154499 has 8 divisors (see below), whose sum is σ = 50987348355168. Its totient is φ = 33991565569920.

The previous prime is 42135378154411. The next prime is 42135378154517. The reversal of 42135378154499 is 99445187353124.

It is a happy number.

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

It is not a de Polignac number, because 42135378154499 - 2⁴⁰ = 41035866526723 is a prime.

It is a super-2 number, since 2×42135378154499² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42135374154499) 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, 177039403892 + ... + 177039404129.

It is an arithmetic number, because the mean of its divisors is an integer number (6373418544396).

Almost surely, 2^{42135378154499} is an apocalyptic number.

42135378154499 is a deficient number, since it is larger than the sum of its proper divisors (8851970200669).

42135378154499 is a wasteful number, since it uses less digits than its factorization.

42135378154499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354078808045.

The product of its digits is 130636800, while the sum is 65.

The spelling of 42135378154499 in words is "forty-two trillion, one hundred thirty-five billion, three hundred seventy-eight million, one hundred fifty-four thousand, four hundred ninety-nine".