1646242 has 8 divisors (see below), whose sum is σ = 2659356. Its totient is φ = 759792.

The previous prime is 1646237. The next prime is 1646261. The reversal of 1646242 is 2426461.

It can be written as a sum of positive squares in 2 ways, for example, as 1320201 + 326041 = 1149^2 + 571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1646242² = 5420225445128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31633 + ... + 31684.

2^1646242 is an apocalyptic number.

1646242 is a deficient number, since it is larger than the sum of its proper divisors (1013114).

1646242 is a wasteful number, since it uses less digits than its factorization.

1646242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63332.

The product of its digits is 2304, while the sum is 25.

The square root of 1646242 is about 1283.0596244914. The cubic root of 1646242 is about 118.0767957436.

The spelling of 1646242 in words is "one million, six hundred forty-six thousand, two hundred forty-two".