100139214 has 64 divisors (see below), whose sum is σ = 244339200. Its totient is φ = 26707968.

The previous prime is 100139173. The next prime is 100139219. The reversal of 100139214 is 412931001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100139219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98742 + ... + 99750.

It is an arithmetic number, because the mean of its divisors is an integer number (3817800).

Almost surely, 2^100139214 is an apocalyptic number.

100139214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100139214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122169600).

100139214 is an abundant number, since it is smaller than the sum of its proper divisors (144199986).

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

100139214 is a wasteful number, since it uses less digits than its factorization.

100139214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 100139214 is about 10006.9582791176. The cubic root of 100139214 is about 464.3741748695.

The spelling of 100139214 in words is "one hundred million, one hundred thirty-nine thousand, two hundred fourteen".