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1421521144 = 232933891559
BaseRepresentation
bin101010010111010…
…1011000011111000
310200001211202102021
41110232223003320
510402402134034
6353020044224
750140505341
oct12456530370
93601752367
101421521144
1166a45896a
12338093674
13198675394
14d6b150c8
1584be66b4
hex54bab0f8

1421521144 has 32 divisors (see below), whose sum is σ = 2683044000. Its totient is φ = 706060672.

The previous prime is 1421521139. The next prime is 1421521177. The reversal of 1421521144 is 4411251241.

It is a congruent number.

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, 911037 + ... + 912595.

It is an arithmetic number, because the mean of its divisors is an integer number (83845125).

Almost surely, 21421521144 is an apocalyptic number.

It is an amenable number.

1421521144 is a deficient number, since it is larger than the sum of its proper divisors (1261522856).

1421521144 is a wasteful number, since it uses less digits than its factorization.

1421521144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247 (or 2243 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 1421521144 is about 37703.0654456637. The cubic root of 1421521144 is about 1124.3920716122.

Adding to 1421521144 its reverse (4411251241), we get a palindrome (5832772385).

The spelling of 1421521144 in words is "one billion, four hundred twenty-one million, five hundred twenty-one thousand, one hundred forty-four".

Divisors: 1 2 4 8 293 389 586 778 1172 1556 1559 2344 3112 3118 6236 12472 113977 227954 455908 456787 606451 911816 913574 1212902 1827148 2425804 3654296 4851608 177690143 355380286 710760572 1421521144