100042220 has 24 divisors (see below), whose sum is σ = 221146800. Its totient is φ = 37910592.

The previous prime is 100042207. The next prime is 100042237. The reversal of 100042220 is 22240001.

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, 131255 + ... + 132014.

It is an arithmetic number, because the mean of its divisors is an integer number (9214450).

Almost surely, 2^100042220 is an apocalyptic number.

100042220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100042220 is an abundant number, since it is smaller than the sum of its proper divisors (121104580).

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

100042220 is a wasteful number, since it uses less digits than its factorization.

100042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263297 (or 263295 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 100042220 is about 10002.1107772310. The cubic root of 100042220 is about 464.2241967972.

Adding to 100042220 its reverse (22240001), we get a palindrome (122282221).

The spelling of 100042220 in words is "one hundred million, forty-two thousand, two hundred twenty".