1000156012 has 24 divisors (see below), whose sum is σ = 1846908000. Its totient is φ = 472957056.

The previous prime is 1000155997. The next prime is 1000156043. The reversal of 1000156012 is 2106510001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52887 + ... + 69262.

It is an arithmetic number, because the mean of its divisors is an integer number (76954500).

Almost surely, 2^1000156012 is an apocalyptic number.

It is an amenable number.

1000156012 is a deficient number, since it is larger than the sum of its proper divisors (846751988).

1000156012 is a wasteful number, since it uses less digits than its factorization.

1000156012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122265 (or 122263 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1000156012 is about 31625.2432717916. The cubic root of 1000156012 is about 1000.0520012958.

Adding to 1000156012 its reverse (2106510001), we get a palindrome (3106666013).

The spelling of 1000156012 in words is "one billion, one hundred fifty-six thousand, twelve".