12003156146 has 8 divisors (see below), whose sum is σ = 18443874204. Its totient is φ = 5855198080.

The previous prime is 12003156133. The next prime is 12003156149. The reversal of 12003156146 is 64165130021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7458913225 + 4544242921 = 86365^2 + 67411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12003156149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73189895 + ... + 73190058.

Almost surely, 2^12003156146 is an apocalyptic number.

12003156146 is a deficient number, since it is larger than the sum of its proper divisors (6440718058).

12003156146 is a wasteful number, since it uses less digits than its factorization.

12003156146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146379996.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 12003156146 its reverse (64165130021), we get a palindrome (76168286167).

The spelling of 12003156146 in words is "twelve billion, three million, one hundred fifty-six thousand, one hundred forty-six".