201044100042 has 24 divisors (see below), whose sum is σ = 435719190816. Its totient is φ = 66995678376.

The previous prime is 201044100029. The next prime is 201044100043. The reversal of 201044100042 is 240001440102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201044099988 and 201044100024.

It is not an unprimeable number, because it can be changed into a prime (201044100043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1519888 + ... + 1646859.

It is an arithmetic number, because the mean of its divisors is an integer number (18154966284).

Almost surely, 2^201044100042 is an apocalyptic number.

201044100042 is an abundant number, since it is smaller than the sum of its proper divisors (234675090774).

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

201044100042 is a wasteful number, since it uses less digits than its factorization.

201044100042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170282 (or 3170279 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 201044100042 its reverse (240001440102), we get a palindrome (441045540144).

The spelling of 201044100042 in words is "two hundred one billion, forty-four million, one hundred thousand, forty-two".