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642412 = 22160603
BaseRepresentation
bin10011100110101101100
31012122020001
42130311230
5131024122
621434044
75313631
oct2346554
91178201
10642412
113a9721
1226b924
13196534
1412a188
15ca527
hex9cd6c

642412 has 6 divisors (see below), whose sum is σ = 1124228. Its totient is φ = 321204.

The previous prime is 642407. The next prime is 642419. The reversal of 642412 is 214246.

It is a pancake number, because a pancake can be divided into 642412 parts by 1133 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 642412.

It is not an unprimeable number, because it can be changed into a prime (642419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80298 + ... + 80305.

2642412 is an apocalyptic number.

It is an amenable number.

642412 is a deficient number, since it is larger than the sum of its proper divisors (481816).

642412 is a wasteful number, since it uses less digits than its factorization.

642412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160607 (or 160605 counting only the distinct ones).

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

The square root of 642412 is about 801.5060823225. The cubic root of 642412 is about 86.2855122264.

Adding to 642412 its reverse (214246), we get a palindrome (856658).

The spelling of 642412 in words is "six hundred forty-two thousand, four hundred twelve".

Divisors: 1 2 4 160603 321206 642412