42642249999 has 16 divisors (see below), whose sum is σ = 60215983200. Its totient is φ = 26749184000.

The previous prime is 42642249989. The next prime is 42642250129. The reversal of 42642249999 is 99994224624.

It is a Cunningham number, because it is equal to 206500²-1.

It is a cyclic number.

It is not a de Polignac number, because 42642249999 - 2⁴ = 42642249983 is a prime.

It is a super-2 number, since 2×42642249999² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42642249989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103249 + ... + 309749.

It is an arithmetic number, because the mean of its divisors is an integer number (3763498950).

Almost surely, 2^42642249999 is an apocalyptic number.

42642249999 is a deficient number, since it is larger than the sum of its proper divisors (17573733201).

42642249999 is a wasteful number, since it uses less digits than its factorization.

42642249999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210570.

The product of its digits is 20155392, while the sum is 60.

The spelling of 42642249999 in words is "forty-two billion, six hundred forty-two million, two hundred forty-nine thousand, nine hundred ninety-nine".