42400123142 has 16 divisors (see below), whose sum is σ = 69262089120. Its totient is φ = 19349406912.

The previous prime is 42400123049. The next prime is 42400123159. The reversal of 42400123142 is 24132100424.

It is a congruent number.

It is an unprimeable number.

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, 9159338 + ... + 9163965.

It is an arithmetic number, because the mean of its divisors is an integer number (4328880570).

Almost surely, 2^42400123142 is an apocalyptic number.

42400123142 is a deficient number, since it is larger than the sum of its proper divisors (26861965978).

42400123142 is a wasteful number, since it uses less digits than its factorization.

42400123142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18323407.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 42400123142 its reverse (24132100424), we get a palindrome (66532223566).

The spelling of 42400123142 in words is "forty-two billion, four hundred million, one hundred twenty-three thousand, one hundred forty-two".