1124256138 has 16 divisors (see below), whose sum is σ = 2380777920. Its totient is φ = 352707776.

The previous prime is 1124256131. The next prime is 1124256143. The reversal of 1124256138 is 8316524211.

It is a junction number, because it is equal to n+sod(n) for n = 1124256099 and 1124256108.

It is not an unprimeable number, because it can be changed into a prime (1124256131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5510958 + ... + 5511161.

It is an arithmetic number, because the mean of its divisors is an integer number (148798620).

Almost surely, 2^1124256138 is an apocalyptic number.

1124256138 is an abundant number, since it is smaller than the sum of its proper divisors (1256521782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1124256138 is a wasteful number, since it uses less digits than its factorization.

1124256138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11022141.

The product of its digits is 11520, while the sum is 33.

The square root of 1124256138 is about 33529.9289888899. The cubic root of 1124256138 is about 1039.8126320493.

The spelling of 1124256138 in words is "one billion, one hundred twenty-four million, two hundred fifty-six thousand, one hundred thirty-eight".