101012140 has 12 divisors (see below), whose sum is σ = 212125536. Its totient is φ = 40404848.

The previous prime is 101012137. The next prime is 101012141. The reversal of 101012140 is 41210101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (101012141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525284 + ... + 2525323.

It is an arithmetic number, because the mean of its divisors is an integer number (17677128).

Almost surely, 2^101012140 is an apocalyptic number.

101012140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101012140 is an abundant number, since it is smaller than the sum of its proper divisors (111113396).

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

101012140 is a wasteful number, since it uses less digits than its factorization.

101012140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050616 (or 5050614 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 101012140 is about 10050.4795905469. The cubic root of 101012140 is about 465.7196088102.

Adding to 101012140 its reverse (41210101), we get a palindrome (142222241).

The spelling of 101012140 in words is "one hundred one million, twelve thousand, one hundred forty".