140890 has 16 divisors (see below), whose sum is σ = 258408. Its totient is φ = 55296.

The previous prime is 140869. The next prime is 140891. The reversal of 140890 is 98041.

It can be written as a sum of positive squares in 4 ways, for example, as 100489 + 40401 = 317^2 + 201^2 .

It is not an unprimeable number, because it can be changed into a prime (140891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634 + ... + 826.

2¹⁴⁰⁸⁹⁰ is an apocalyptic number.

140890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140890 is a deficient number, since it is larger than the sum of its proper divisors (117518).

140890 is a wasteful number, since it uses less digits than its factorization.

140890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 140890 is about 375.3531670307. The cubic root of 140890 is about 52.0347400993.

Subtracting from 140890 its reverse (98041), we obtain a square (42849 = 207²).

The spelling of 140890 in words is "one hundred forty thousand, eight hundred ninety".