42123134331 has 24 divisors (see below), whose sum is σ = 61290906560. Its totient is φ = 27876481776.

The previous prime is 42123134303. The next prime is 42123134351. The reversal of 42123134331 is 13343132124.

It is a happy number.

42123134331 is a `hidden beast` number, since 4 + 2 + 12 + 313 + 4 + 331 = 666.

It is not a de Polignac number, because 42123134331 - 2¹¹ = 42123132283 is a prime.

It is a super-2 number, since 2×42123134331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42123134295 and 42123134304.

It is not an unprimeable number, because it can be changed into a prime (42123134351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1243440 + ... + 1276866.

Almost surely, 2^42123134331 is an apocalyptic number.

42123134331 is a deficient number, since it is larger than the sum of its proper divisors (19167772229).

42123134331 is a wasteful number, since it uses less digits than its factorization.

42123134331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34455 (or 34452 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 42123134331 its reverse (13343132124), we get a palindrome (55466266455).

The spelling of 42123134331 in words is "forty-two billion, one hundred twenty-three million, one hundred thirty-four thousand, three hundred thirty-one".