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42144420625 = 54563119771
BaseRepresentation
bin100111010000000000…
…001101001100010001
311000210010011101120121
4213100000031030101
51142302432430000
631205541110241
73021243443656
oct472000151421
9130703141517
1042144420625
1116967476a9a
1282020b8381
133c884240c8
14207b2dbc2d
151169dc5b1a
hex9d000d311

42144420625 has 20 divisors (see below), whose sum is σ = 52757649648. Its totient is φ = 33655370000.

The previous prime is 42144420589. The next prime is 42144420629. The reversal of 42144420625 is 52602444124.

It is not a de Polignac number, because 42144420625 - 221 = 42142323473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42144420629) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 291990 + ... + 411760.

Almost surely, 242144420625 is an apocalyptic number.

It is an amenable number.

42144420625 is a deficient number, since it is larger than the sum of its proper divisors (10613229023).

42144420625 is an equidigital number, since it uses as much as digits as its factorization.

42144420625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120354 (or 120339 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 42144420625 its reverse (52602444124), we get a palindrome (94746864749).

The spelling of 42144420625 in words is "forty-two billion, one hundred forty-four million, four hundred twenty thousand, six hundred twenty-five".

Divisors: 1 5 25 125 563 625 2815 14075 70375 119771 351875 598855 2994275 14971375 67431073 74856875 337155365 1685776825 8428884125 42144420625