42223213251 has 8 divisors (see below), whose sum is σ = 62552908560. Its totient is φ = 28148808816.

The previous prime is 42223213243. The next prime is 42223213273. The reversal of 42223213251 is 15231232224.

42223213251 is a `hidden beast` number, since 422 + 2 + 3 + 213 + 25 + 1 = 666.

42223213251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42223213251 - 2³ = 42223213243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1563822713 = 42223213251 / (4 + 2 + 2 + 2 + 3 + 2 + 1 + 3 + 2 + 5 + 1).

It is not an unprimeable number, because it can be changed into a prime (42223213211) 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, 781911330 + ... + 781911383.

It is an arithmetic number, because the mean of its divisors is an integer number (7819113570).

Almost surely, 2^42223213251 is an apocalyptic number.

42223213251 is a deficient number, since it is larger than the sum of its proper divisors (20329695309).

42223213251 is a wasteful number, since it uses less digits than its factorization.

42223213251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563822722 (or 1563822716 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 42223213251 its reverse (15231232224), we get a palindrome (57454445475).

The spelling of 42223213251 in words is "forty-two billion, two hundred twenty-three million, two hundred thirteen thousand, two hundred fifty-one".