140490 has 48 divisors (see below), whose sum is σ = 419328. Its totient is φ = 31968.

The previous prime is 140477. The next prime is 140521. The reversal of 140490 is 94041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519 + ... + 741.

It is an arithmetic number, because the mean of its divisors is an integer number (8736).

2¹⁴⁰⁴⁹⁰ is an apocalyptic number.

140490 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 140490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209664).

140490 is an abundant number, since it is smaller than the sum of its proper divisors (278838).

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

140490 is a wasteful number, since it uses less digits than its factorization.

140490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 140490 is about 374.8199567793. The cubic root of 140490 is about 51.9854495779.

It can be divided in two parts, 140 and 490, that added together give a triangular number (630 = T₃₅).

The spelling of 140490 in words is "one hundred forty thousand, four hundred ninety".