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7912042 = 219791999
BaseRepresentation
bin11110001011101001101010
3112212222021121
4132023221222
54011141132
6441325454
7124152115
oct36135152
915788247
107912042
114514486
12279688a
1318403a8
14109d57c
15a64497
hex78ba6a

7912042 has 8 divisors (see below), whose sum is σ = 11880000. Its totient is φ = 3952044.

The previous prime is 7912039. The next prime is 7912061. The reversal of 7912042 is 2402197.

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

It is a junction number, because it is equal to n+sod(n) for n = 7911998 and 7912016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2959 + ... + 4957.

It is an arithmetic number, because the mean of its divisors is an integer number (1485000).

Almost surely, 27912042 is an apocalyptic number.

7912042 is a deficient number, since it is larger than the sum of its proper divisors (3967958).

7912042 is a wasteful number, since it uses less digits than its factorization.

7912042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 7912042 is about 2812.8352244666. The cubic root of 7912042 is about 199.2643138140.

It can be divided in two parts, 79 and 12042, that added together give a palindrome (12121).

The spelling of 7912042 in words is "seven million, nine hundred twelve thousand, forty-two".

Divisors: 1 2 1979 1999 3958 3998 3956021 7912042