140049810 has 80 divisors (see below), whose sum is σ = 386838936. Its totient is φ = 36329472.

The previous prime is 140049803. The next prime is 140049841. The reversal of 140049810 is 18940041.

140049810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 139641489 + 408321 = 11817^2 + 639^2 .

It is a super-2 number, since 2×140049810² = 39227898562072200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27634 + ... + 32306.

Almost surely, 2^140049810 is an apocalyptic number.

140049810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140049810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193419468).

140049810 is an abundant number, since it is smaller than the sum of its proper divisors (246789126).

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

140049810 is a wasteful number, since it uses less digits than its factorization.

140049810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4729 (or 4720 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 140049810 is about 11834.2642356844. The cubic root of 140049810 is about 519.3109833908.

Adding to 140049810 its reverse (18940041), we get a palindrome (158989851).

The spelling of 140049810 in words is "one hundred forty million, forty-nine thousand, eight hundred ten".