1490231 has 4 divisors (see below), whose sum is σ = 1494000. Its totient is φ = 1486464.

The previous prime is 1490213. The next prime is 1490233. The reversal of 1490231 is 1320941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320941 = 31 ⋅42611.

It is a cyclic number.

It is not a de Polignac number, because 1490231 - 2¹⁰ = 1489207 is a prime.

It is a super-2 number, since 2×1490231² = 4441576866722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1211 + ... + 2108.

It is an arithmetic number, because the mean of its divisors is an integer number (373500).

2^1490231 is an apocalyptic number.

1490231 is a deficient number, since it is larger than the sum of its proper divisors (3769).

1490231 is an equidigital number, since it uses as much as digits as its factorization.

1490231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1490231 is about 1220.7501791931. The cubic root of 1490231 is about 114.2223780757. Note that the first 3 decimals are identical.

The spelling of 1490231 in words is "one million, four hundred ninety thousand, two hundred thirty-one".