101143840 has 192 divisors, whose sum is σ = 296352000. Its totient is φ = 32514048.

The previous prime is 101143817. The next prime is 101143871. The reversal of 101143840 is 48341101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1042672 + ... + 1042768.

It is an arithmetic number, because the mean of its divisors is an integer number (1543500).

Almost surely, 2^101143840 is an apocalyptic number.

101143840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101143840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148176000).

101143840 is an abundant number, since it is smaller than the sum of its proper divisors (195208160).

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

101143840 is an equidigital number, since it uses as much as digits as its factorization.

101143840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 101143840 is about 10057.0293824767. The cubic root of 101143840 is about 465.9219232231.

Adding to 101143840 its reverse (48341101), we get a palindrome (149484941).

The spelling of 101143840 in words is "one hundred one million, one hundred forty-three thousand, eight hundred forty".