42224387381 has 32 divisors (see below), whose sum is σ = 49328455680. Its totient is φ = 35718419200.

The previous prime is 42224387333. The next prime is 42224387389. The reversal of 42224387381 is 18378342224.

It is a cyclic number.

It is not a de Polignac number, because 42224387381 - 2²² = 42220193077 is a prime.

It is a super-2 number, since 2×42224387381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42224387389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5961200 + ... + 5968278.

It is an arithmetic number, because the mean of its divisors is an integer number (1541514240).

Almost surely, 2^42224387381 is an apocalyptic number.

It is an amenable number.

42224387381 is a deficient number, since it is larger than the sum of its proper divisors (7104068299).

42224387381 is a wasteful number, since it uses less digits than its factorization.

42224387381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7465.

The product of its digits is 516096, while the sum is 44.

The spelling of 42224387381 in words is "forty-two billion, two hundred twenty-four million, three hundred eighty-seven thousand, three hundred eighty-one".