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1604242 = 2802121
BaseRepresentation
bin110000111101010010010
310000111121101
412013222102
5402313432
654215014
716431043
oct6075222
93014541
101604242
119a6322
1265446a
13442273
142da8ca
1521a4e7
hex187a92

1604242 has 4 divisors (see below), whose sum is σ = 2406366. Its totient is φ = 802120.

The previous prime is 1604237. The next prime is 1604243. The reversal of 1604242 is 2424061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2424061 = 5345737.

It can be written as a sum of positive squares in only one way, i.e., 1418481 + 185761 = 1191^2 + 431^2 .

It is not an unprimeable number, because it can be changed into a prime (1604243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401059 + ... + 401062.

21604242 is an apocalyptic number.

1604242 is a deficient number, since it is larger than the sum of its proper divisors (802124).

1604242 is an equidigital number, since it uses as much as digits as its factorization.

1604242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802123.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1604242 is about 1266.5867518650. The cubic root of 1604242 is about 117.0639823419.

The spelling of 1604242 in words is "one million, six hundred four thousand, two hundred forty-two".

Divisors: 1 2 802121 1604242