1000542123 has 72 divisors (see below), whose sum is σ = 1828693152. Its totient is φ = 523418112.

The previous prime is 1000542121. The next prime is 1000542133. The reversal of 1000542123 is 3212450001.

1000542123 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 542 + 123 = 666.

It is not a de Polignac number, because 1000542123 - 2¹ = 1000542121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000542096 and 1000542105.

It is not an unprimeable number, because it can be changed into a prime (1000542121) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 275586 + ... + 279192.

It is an arithmetic number, because the mean of its divisors is an integer number (25398516).

Almost surely, 2^1000542123 is an apocalyptic number.

1000542123 is a deficient number, since it is larger than the sum of its proper divisors (828151029).

1000542123 is a wasteful number, since it uses less digits than its factorization.

1000542123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681 (or 3671 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1000542123 is about 31631.3471575271. The cubic root of 1000542123 is about 1000.1806750212.

Adding to 1000542123 its reverse (3212450001), we get a palindrome (4212992124).

The spelling of 1000542123 in words is "one billion, five hundred forty-two thousand, one hundred twenty-three".