42240151221 has 8 divisors (see below), whose sum is σ = 56360989344. Its totient is φ = 28139706960.

The previous prime is 42240151211. The next prime is 42240151237. The reversal of 42240151221 is 12215104224.

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

It is not a de Polignac number, because 42240151221 - 2¹⁴ = 42240134837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42240151191 and 42240151200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42240151211) 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, 5093631 + ... + 5101916.

It is an arithmetic number, because the mean of its divisors is an integer number (7045123668).

Almost surely, 2^42240151221 is an apocalyptic number.

It is an amenable number.

42240151221 is a deficient number, since it is larger than the sum of its proper divisors (14120838123).

42240151221 is a wasteful number, since it uses less digits than its factorization.

42240151221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196931.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 42240151221 its reverse (12215104224), we get a palindrome (54455255445).

The spelling of 42240151221 in words is "forty-two billion, two hundred forty million, one hundred fifty-one thousand, two hundred twenty-one".