42492090909 has 8 divisors (see below), whose sum is σ = 56657611360. Its totient is φ = 28327315536.

The previous prime is 42492090889. The next prime is 42492090959. The reversal of 42492090909 is 90909029424.

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

It is not a de Polignac number, because 42492090909 - 2⁹ = 42492090397 is a prime.

It is a Duffinian number.

42492090909 is a modest number, since divided by 90909 gives 42492 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42492090959) 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, 35842 + ... + 293715.

It is an arithmetic number, because the mean of its divisors is an integer number (7082201420).

Almost surely, 2^42492090909 is an apocalyptic number.

It is an amenable number.

42492090909 is a deficient number, since it is larger than the sum of its proper divisors (14165520451).

42492090909 is a wasteful number, since it uses less digits than its factorization.

42492090909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372539.

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 42492090909 in words is "forty-two billion, four hundred ninety-two million, ninety thousand, nine hundred nine".