43699000042 has 4 divisors (see below), whose sum is σ = 65548500066. Its totient is φ = 21849500020.

The previous prime is 43699000031. The next prime is 43699000061. The reversal of 43699000042 is 24000099634.

43699000042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 40489890841 + 3209109201 = 201221^2 + 56649^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43698999965 and 43699000010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10924750009 + ... + 10924750012.

Almost surely, 2^43699000042 is an apocalyptic number.

43699000042 is a deficient number, since it is larger than the sum of its proper divisors (21849500024).

43699000042 is a wasteful number, since it uses less digits than its factorization.

43699000042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21849500023.

The product of its (nonzero) digits is 46656, while the sum is 37.

Adding to 43699000042 its reverse (24000099634), we get a palindrome (67699099676).

The spelling of 43699000042 in words is "forty-three billion, six hundred ninety-nine million, forty-two", and thus it is an aban number.