101440340 has 24 divisors (see below), whose sum is σ = 213649800. Its totient is φ = 40457088.

The previous prime is 101440337. The next prime is 101440351. The reversal of 101440340 is 43044101.

It can be written as a sum of positive squares in 4 ways, for example, as 21659716 + 79780624 = 4654^2 + 8932^2 .

It is a congruent number.

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, 287 + ... + 14246.

It is an arithmetic number, because the mean of its divisors is an integer number (8902075).

Almost surely, 2^101440340 is an apocalyptic number.

101440340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101440340 is an abundant number, since it is smaller than the sum of its proper divisors (112209460).

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

101440340 is a wasteful number, since it uses less digits than its factorization.

101440340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14891 (or 14889 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 101440340 is about 10071.7595285034. The cubic root of 101440340 is about 466.3767575777.

Adding to 101440340 its reverse (43044101), we get a palindrome (144484441).

The spelling of 101440340 in words is "one hundred one million, four hundred forty thousand, three hundred forty".