101021420 has 24 divisors (see below), whose sum is σ = 212848944. Its totient is φ = 40274496.

The previous prime is 101021399. The next prime is 101021443. The reversal of 101021420 is 24120101.

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, 2087 + ... + 14366.

It is an arithmetic number, because the mean of its divisors is an integer number (8868706).

Almost surely, 2^101021420 is an apocalyptic number.

101021420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101021420 is an abundant number, since it is smaller than the sum of its proper divisors (111827524).

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

101021420 is a wasteful number, since it uses less digits than its factorization.

101021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16769 (or 16767 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 101021420 is about 10050.9412494552. The cubic root of 101021420 is about 465.7338702829.

Adding to 101021420 its reverse (24120101), we get a palindrome (125141521).

The spelling of 101021420 in words is "one hundred one million, twenty-one thousand, four hundred twenty".