42420383881 has 4 divisors (see below), whose sum is σ = 42435585664. Its totient is φ = 42405182100.

The previous prime is 42420383867. The next prime is 42420383893. The reversal of 42420383881 is 18838302424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42420383881 is a prime.

It is a super-2 number, since 2×42420383881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42420383821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7596705 + ... + 7602286.

It is an arithmetic number, because the mean of its divisors is an integer number (10608896416).

Almost surely, 2^42420383881 is an apocalyptic number.

It is an amenable number.

42420383881 is a deficient number, since it is larger than the sum of its proper divisors (15201783).

42420383881 is a wasteful number, since it uses less digits than its factorization.

42420383881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15201782.

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 42420383881 in words is "forty-two billion, four hundred twenty million, three hundred eighty-three thousand, eight hundred eighty-one".