42140000421 has 24 divisors (see below), whose sum is σ = 64184875040. Its totient is φ = 26568064800.

The previous prime is 42140000407. The next prime is 42140000431. The reversal of 42140000421 is 12400004124.

It is not a de Polignac number, because 42140000421 - 2²² = 42135806117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42140000394 and 42140000403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42140000431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118150 + ... + 313431.

Almost surely, 2^42140000421 is an apocalyptic number.

It is an amenable number.

42140000421 is a deficient number, since it is larger than the sum of its proper divisors (22044874619).

42140000421 is a wasteful number, since it uses less digits than its factorization.

42140000421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432177 (or 432174 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 42140000421 its reverse (12400004124), we get a palindrome (54540004545).

The spelling of 42140000421 in words is "forty-two billion, one hundred forty million, four hundred twenty-one", and thus it is an aban number.