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75012421042 = 21319314948669
BaseRepresentation
bin100010111011100010…
…1101011010110110010
321011121202002210220101
41011313011223112302
52212111134433132
654243224303014
75263610026036
oct1056705532662
9234552083811
1075012421042
11298a36131a9
1212655611a6a
1370c5a34a70
1438b85cc1c6
151e406bc7e7
hex117716b5b2

75012421042 has 16 divisors (see below), whose sum is σ = 121801763160. Its totient is φ = 34441731072.

The previous prime is 75012421039. The next prime is 75012421079. The reversal of 75012421042 is 24012421057.

Adding to 75012421042 its reverse (24012421057), we get a palindrome (99024842099).

It can be written as a sum of positive squares in 4 ways, for example, as 19965407401 + 55047013641 = 141299^2 + 234621^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 75012421042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7469317 + ... + 7479352.

Almost surely, 275012421042 is an apocalyptic number.

75012421042 is a deficient number, since it is larger than the sum of its proper divisors (46789342118).

75012421042 is a wasteful number, since it uses less digits than its factorization.

75012421042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14948877.

The product of its (nonzero) digits is 4480, while the sum is 28.

The spelling of 75012421042 in words is "seventy-five billion, twelve million, four hundred twenty-one thousand, forty-two".

Divisors: 1 2 13 26 193 386 2509 5018 14948669 29897338 194332697 388665394 2885093117 5770186234 37506210521 75012421042