42322021251 has 8 divisors (see below), whose sum is σ = 56430339840. Its totient is φ = 28214191752.

The previous prime is 42322021243. The next prime is 42322021277. The reversal of 42322021251 is 15212022324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42322021251 - 2³ = 42322021243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42322021201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204066 + ... + 355368.

It is an arithmetic number, because the mean of its divisors is an integer number (7053792480).

Almost surely, 2^42322021251 is an apocalyptic number.

42322021251 is a deficient number, since it is larger than the sum of its proper divisors (14108318589).

42322021251 is a wasteful number, since it uses less digits than its factorization.

42322021251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244545.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 42322021251 its reverse (15212022324), we get a palindrome (57534043575).

The spelling of 42322021251 in words is "forty-two billion, three hundred twenty-two million, twenty-one thousand, two hundred fifty-one".