2042120100 has 36 divisors (see below), whose sum is σ = 5908535024. Its totient is φ = 544565280.

The previous prime is 2042120083. The next prime is 2042120137. The reversal of 2042120100 is 10212402.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3403234 + ... + 3403833.

Almost surely, 2^2042120100 is an apocalyptic number.

2042120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2042120100 is an abundant number, since it is smaller than the sum of its proper divisors (3866414924).

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

2042120100 is a wasteful number, since it uses less digits than its factorization.

2042120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6807084 (or 6807077 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2042120100 is about 45189.8229693368. The cubic root of 2042120100 is about 1268.7043433626.

Adding to 2042120100 its reverse (10212402), we get a palindrome (2052332502).

The spelling of 2042120100 in words is "two billion, forty-two million, one hundred twenty thousand, one hundred".