1490420 has 12 divisors (see below), whose sum is σ = 3129924. Its totient is φ = 596160.

The previous prime is 1490381. The next prime is 1490429. The reversal of 1490420 is 240941.

It can be written as a sum of positive squares in 2 ways, for example, as 781456 + 708964 = 884^2 + 842^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 74521 = 1490420 / (1 + 4 + 9 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1490392 and 1490401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490429) 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, 37241 + ... + 37280.

It is an arithmetic number, because the mean of its divisors is an integer number (260827).

2^1490420 is an apocalyptic number.

1490420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1490420 is an abundant number, since it is smaller than the sum of its proper divisors (1639504).

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

1490420 is a wasteful number, since it uses less digits than its factorization.

1490420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74530 (or 74528 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1490420 is about 1220.8275881549. The cubic root of 1490420 is about 114.2272066598.

The spelling of 1490420 in words is "one million, four hundred ninety thousand, four hundred twenty".