1247490 has 48 divisors (see below), whose sum is σ = 3302208. Its totient is φ = 326688.

The previous prime is 1247479. The next prime is 1247501. The reversal of 1247490 is 947421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1247479) and next prime (1247501).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7387 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (68796).

2^1247490 is an apocalyptic number.

1247490 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 1247490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651104).

1247490 is an abundant number, since it is smaller than the sum of its proper divisors (2054718).

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

1247490 is a wasteful number, since it uses less digits than its factorization.

1247490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1247490 is about 1116.9109185607. The cubic root of 1247490 is about 107.6495844400.

The spelling of 1247490 in words is "one million, two hundred forty-seven thousand, four hundred ninety".