2001042156204 has 96 divisors (see below), whose sum is σ = 6385091811840. Its totient is φ = 527747379264.

The previous prime is 2001042156167. The next prime is 2001042156247. The reversal of 2001042156204 is 4026512401002.

2001042156204 is a `hidden beast` number, since 2 + 0 + 0 + 10 + 4 + 21 + 5 + 620 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101793294 + ... + 101812949.

It is an arithmetic number, because the mean of its divisors is an integer number (66511373040).

Almost surely, 2^{2001042156204} is an apocalyptic number.

It is an amenable number.

2001042156204 is an abundant number, since it is smaller than the sum of its proper divisors (4384049655636).

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

2001042156204 is a wasteful number, since it uses less digits than its factorization.

2001042156204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203606276 (or 203606268 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 2001042156204 its reverse (4026512401002), we get a palindrome (6027554557206).

The spelling of 2001042156204 in words is "two trillion, one billion, forty-two million, one hundred fifty-six thousand, two hundred four".