42123220231 has 8 divisors (see below), whose sum is σ = 42224331600. Its totient is φ = 42022231680.

The previous prime is 42123220219. The next prime is 42123220253. The reversal of 42123220231 is 13202232124.

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

It is a cyclic number.

It is not a de Polignac number, because 42123220231 - 2¹³ = 42123212039 is a prime.

It is a super-2 number, since 2×42123220231² (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 (42123220261) 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, 675375 + ... + 735103.

It is an arithmetic number, because the mean of its divisors is an integer number (5278041450).

Almost surely, 2^42123220231 is an apocalyptic number.

42123220231 is a deficient number, since it is larger than the sum of its proper divisors (101111369).

42123220231 is an equidigital number, since it uses as much as digits as its factorization.

42123220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61409.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 42123220231 its reverse (13202232124), we get a palindrome (55325452355).

The spelling of 42123220231 in words is "forty-two billion, one hundred twenty-three million, two hundred twenty thousand, two hundred thirty-one".