101238840 has 192 divisors, whose sum is σ = 355773600. Its totient is φ = 24952320.

The previous prime is 101238817. The next prime is 101238857. The reversal of 101238840 is 48832101.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 779 × 171 × 760.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2469220 + ... + 2469260.

Almost surely, 2^101238840 is an apocalyptic number.

101238840 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 101238840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177886800).

101238840 is an abundant number, since it is smaller than the sum of its proper divisors (254534760).

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

101238840 is a wasteful number, since it uses less digits than its factorization.

101238840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 101238840 is about 10061.7513386090. The cubic root of 101238840 is about 466.0677509603.

The spelling of 101238840 in words is "one hundred one million, two hundred thirty-eight thousand, eight hundred forty".