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12490642 = 26245321
BaseRepresentation
bin101111101001…
…011110010010
3212111120221101
4233221132102
511144200032
61123415014
7211111603
oct57513622
925446841
1012490642
11706144a
12422446a
132784418
141931daa
hexbe9792

12490642 has 4 divisors (see below), whose sum is σ = 18735966. Its totient is φ = 6245320.

The previous prime is 12490627. The next prime is 12490663. The reversal of 12490642 is 24609421.

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

It can be written as a sum of positive squares in only one way, i.e., 10361961 + 2128681 = 3219^2 + 1459^2 .

It is a super-2 number, since 2×124906422 = 312032275144328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12490642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3122659 + ... + 3122662.

Almost surely, 212490642 is an apocalyptic number.

12490642 is a deficient number, since it is larger than the sum of its proper divisors (6245324).

12490642 is an equidigital number, since it uses as much as digits as its factorization.

12490642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6245323.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 12490642 is about 3534.2102370968. The cubic root of 12490642 is about 232.0215125711.

The spelling of 12490642 in words is "twelve million, four hundred ninety thousand, six hundred forty-two".

Divisors: 1 2 6245321 12490642