2115142499 has 4 divisors (see below), whose sum is σ = 2239562664. Its totient is φ = 1990722336.

The previous prime is 2115142489. The next prime is 2115142511. The reversal of 2115142499 is 9942415112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2115142499 - 2⁴ = 2115142483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115142409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62210057 + ... + 62210090.

It is an arithmetic number, because the mean of its divisors is an integer number (559890666).

Almost surely, 2^2115142499 is an apocalyptic number.

2115142499 is a deficient number, since it is larger than the sum of its proper divisors (124420165).

2115142499 is a wasteful number, since it uses less digits than its factorization.

2115142499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124420164.

The product of its digits is 25920, while the sum is 38.

The square root of 2115142499 is about 45990.6783924743. The cubic root of 2115142499 is about 1283.6497596678.

The spelling of 2115142499 in words is "two billion, one hundred fifteen million, one hundred forty-two thousand, four hundred ninety-nine".