101023140 has 24 divisors (see below), whose sum is σ = 282864960. Its totient is φ = 26939488.

The previous prime is 101023127. The next prime is 101023157. The reversal of 101023140 is 41320101.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841800 + ... + 841919.

It is an arithmetic number, because the mean of its divisors is an integer number (11786040).

Almost surely, 2^101023140 is an apocalyptic number.

101023140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101023140 is an abundant number, since it is smaller than the sum of its proper divisors (181841820).

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

101023140 is a wasteful number, since it uses less digits than its factorization.

101023140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683731 (or 1683729 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 101023140 is about 10051.0268132166. The cubic root of 101023140 is about 465.7365134772.

Adding to 101023140 its reverse (41320101), we get a palindrome (142343241).

The spelling of 101023140 in words is "one hundred one million, twenty-three thousand, one hundred forty".