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2142230454 = 2327131307833
BaseRepresentation
bin111111110101111…
…1101011110110110
312112021222120201200
41333223331132312
513341402333304
6552323233330
7104041441560
oct17753753666
95467876650
102142230454
119aa2624a1
124b9518846
13281a859b0
14164720330
15c8109e39
hex7fafd7b6

2142230454 has 48 divisors (see below), whose sum is σ = 5712618912. Its totient is φ = 564983424.

The previous prime is 2142230413. The next prime is 2142230471. The reversal of 2142230454 is 4540322412.

It is a super-2 number, since 2×21422304542 = 9178302636090092232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 652279 + ... + 655554.

It is an arithmetic number, because the mean of its divisors is an integer number (119012894).

Almost surely, 22142230454 is an apocalyptic number.

2142230454 is an abundant number, since it is smaller than the sum of its proper divisors (3570388458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2142230454 is a wasteful number, since it uses less digits than its factorization.

2142230454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307861 (or 1307858 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 2142230454 is about 46284.2354803447. The cubic root of 2142230454 is about 1289.1062964408.

Adding to 2142230454 its reverse (4540322412), we get a palindrome (6682552866).

The spelling of 2142230454 in words is "two billion, one hundred forty-two million, two hundred thirty thousand, four hundred fifty-four".

Divisors: 1 2 3 6 7 9 13 14 18 21 26 39 42 63 78 91 117 126 182 234 273 546 819 1638 1307833 2615666 3923499 7846998 9154831 11770497 17001829 18309662 23540994 27464493 34003658 51005487 54928986 82393479 102010974 119012803 153016461 164786958 238025606 306032922 357038409 714076818 1071115227 2142230454