42254989217 has 16 divisors (see below), whose sum is σ = 51137597952. Its totient is φ = 34084385280.

The previous prime is 42254989169. The next prime is 42254989241. The reversal of 42254989217 is 71298945224.

It is not a de Polignac number, because 42254989217 - 2⁸ = 42254988961 is a prime.

It is a super-2 number, since 2×42254989217² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42254980217) 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, 1871717 + ... + 1894157.

It is an arithmetic number, because the mean of its divisors is an integer number (3196099872).

Almost surely, 2^42254989217 is an apocalyptic number.

It is an amenable number.

42254989217 is a deficient number, since it is larger than the sum of its proper divisors (8882608735).

42254989217 is a wasteful number, since it uses less digits than its factorization.

42254989217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38288.

The product of its digits is 2903040, while the sum is 53.

The spelling of 42254989217 in words is "forty-two billion, two hundred fifty-four million, nine hundred eighty-nine thousand, two hundred seventeen".