1540246 has 4 divisors (see below), whose sum is σ = 2310372. Its totient is φ = 770122.

The previous prime is 1540243. The next prime is 1540249. The reversal of 1540246 is 6420451.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1540243) and next prime (1540249).

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385060 + ... + 385063.

It is an arithmetic number, because the mean of its divisors is an integer number (577593).

2^1540246 is an apocalyptic number.

1540246 is a deficient number, since it is larger than the sum of its proper divisors (770126).

1540246 is an equidigital number, since it uses as much as digits as its factorization.

1540246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770125.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1540246 is about 1241.0664768658. The cubic root of 1540246 is about 115.4861836387.

Adding to 1540246 its reverse (6420451), we get a palindrome (7960697).

The spelling of 1540246 in words is "one million, five hundred forty thousand, two hundred forty-six".